LS1 Engine for aircraft?

Discussion in 'Chevy' started by Brohawk, Feb 9, 2008.

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  1. Sep 26, 2013 #121

    Brian Clayton

    Brian Clayton

    Brian Clayton

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    I have yet to see someone say what exactly is the reliability problem with auto engines. PRSU aside.... Who has the pile of broken cranks, rods, blocks? I am sure Ross would agree, the hard parts in aircraft engines and auto engines are made the same, and the stock internals on either are nowhere as nice as aftermarket race parts. People keep bringing up the reliability issue.... what is it? What breaks that doesn't break in a "aircraft" engine?
     
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  2. Sep 26, 2013 #122

    rv6ejguy

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    Couldn't have said it better. People against auto conversions usually have a "feeling" that auto engines won't run at WOT 3000-4500 rpm for a long time but in 10 years on forums, nobody has ever shown me a lot a broken parts to back up their feelings. In fact, as I've said so often, the OEMs test every new design far in excess of what the FAA requires for certified engines. Typical modern day endurance testing involves between 200 and 1200 hours at WOT, torque peak to power peak rpm on a single example and they would run dozens of examples similarly to validate the design prior to production release.

    Does anyone here really think running an LSX at 2500-2800 rpm WOT is going to break it or wear it out prematurely? GM did a test way back on the LS1- 420 hours I believe at FULL rated power. Everything within limits upon disassembly.
     
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  3. Sep 26, 2013 #123

    Brian Clayton

    Brian Clayton

    Brian Clayton

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    Look at generators and big water pumps driven with automotive engines and small engines (briggs type). Hours and hours and hours at full load. Some are even made to change the oil without shutting the engine down. Want a direct drive? Fine, turn it upside down and put a dry sump pump on it. Thrust bearing issues? Pick a bearing and some basic machine work and there you go. Looks to me like dedicated aircraft engines in aircraft enviroments fail more often than automotive engines in automotive enviroments (mechanical failure from stress not abuse). When is the last time you saw a cylinder and head come flying off of a v style or inline automotive engine? Or saw a cracked flywheel flange? If LS engines has the same failure rate as a Rotax, people would walk instead of drive. Yes, I understand the stresses of a WOT engine are different than the subdued driving habits of people, but I don't believe it is that much different. I would hazard a guess to say that the constant up and down revs of a engine coupled to a transmission are far greater stresses than WOT stresses of a prop at a fairly constant rpm. Ross has been flying his "car engine" for how long? How many hours? And no offense intended, but it probably was not worth a crap as a car engine.
     
  4. Sep 27, 2013 #124



    RV6 Guy Quote "Couldn't have said it better. People against auto conversions usually have a "feeling" that auto engines won't run at WOT 3000-4500 rpm for a long time but in 10 years on forums, nobody has ever shown me a lot a broken parts to back up their feelings. In fact, as I've said so often, the OEMs test every new design far in excess of what the FAA requires for certified engines. Typical modern day endurance testing involves between 200 and 1200 hours at WOT, torque peak to power peak rpm on a single example and they would run dozens of examples similarly to validate the design prior to production release.

    Does anyone here really think running an LSX at 2500-2800 rpm WOT is going to break it or wear it out prematurely? GM did a test way back on the LS1- 420 hours I believe at FULL rated power. Everything within limits upon disassembly.

    I added the quote from RV6Guy into this reply because I agree with both him and Brian. The thing about WOT is that its a subjective term. On certified Lyc/Cons 2700 rpm is often referred to as WOT.........but it really isn't. These engines are capable of spinning at higher rpms, its just that the propellors they are turning limit the rpm because of tip speed. I'm sure I'm not telling Brian/RV6 anything they don't already know, but others seem to refer to the reccommended rpm of the propellor as being the maximum WOT of the engine. Its incorrect to say that these engines won't turn higher rpms and do so for an extended period of time. There are several different certified engines that do turn higher rpms and utilize a reduction gear.
    Any engine can have its maximum WOT established by the engine manufacturer and then modified by an individual. GM makes some big block engines to work in pumping situations that have cams designed for low rpm only useage. Take this engine apart and put a different cam in it and the required valves and valve springs and you can change its operating rpm range. So any engine can be purpose built to operate in a given range. The sweet thing about most automotive engines is that they have been engineered to thrive in spite of poor treatment and maintainance and still run at higher rpms than a certified engine can even dream of. The massive pistons and power pulses won't allow the GA airplane engines to run that fast, but they will run faster than 2700 rpms.
    On another thread in the general automotive section, the venerable Ron Watanaja mentioned that basic engine to basic engine, the reliability of automotive engines exceeds aircraft engines. (I don't want to put words in his mouth, so you should read the thread and see if you agree with my understanding of what he said) The problem usually arises in the method of adapting the auto engine to the propellor.
     
  5. Sep 27, 2013 #125

    Toobuilder

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    Agree with the general gist of the above thread, but to make a small correction: WOT means "wide open throttle" - a reference to the angle of throttle blade opening or manifold pressure. This is unrelated to "redline" which is most often a reference to RPM. Many aircraft engines are at "WOT" from the beginning of the takeoff roll, through the flight and until the descent phase- often with substantially less than redline RPM for most of that time.

    One can just as easily be at "WOT" at redline or some substantially less RPM. Additionally, you can also be at WOT and still well under 100% power.
     
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  6. Sep 27, 2013 #126

    stol

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  7. Sep 27, 2013 #127

    Brian Clayton

    Brian Clayton

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    My idea of WOT and probably Russ too, is 100 percent open throttle with the engine loaded as hard as it will pull at a given rpm. 100% power would be subjective to the peak power of the engine. I am sure that if you re-cam a 0-200 and spin it up to wherever the heads quit, it would make quite a bit more than 100 hp, thus moving 100% power to a different rpm versus whatever they are stock. If you change a LS1 to run at say 2500, and load it 100 percent there, then the stresses would be less than higher rpms. Then you could start hacking down the parts to lose weight (like aircraft engines) because the stresses are less. I can say one thing from my experience with race engines, high rpm kills much, much faster than high horsepower or high loadings. I don't see why a LS1 engine could not be lightened up a good bit, because of lower stress. Heck, race cranks can be made down 30 lbs or so lighter than stock cranks....made for engines that make 2-3 times stock power at 2000-3000 more rpm than stock redline.
     
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  8. Sep 27, 2013 #128

    rv6ejguy

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    I use the term WOT a lot because so many lay people think that since auto engines spend most of their lives at part throttle cruise that they will wear out or blow up if you run long periods of full throttle. If at WOT, then hp developed just depends on rpm and altitude/ MAP. In geared auto conversions we normally only rev to about 2/3rds to 3/4 of peak power or redline rpm as the case may be so in stock form we have derated them to about 65-75% power and the mechanical stress levels are far below any critical levels. Many good auto engine designs can produce 4-5 times the stock hp output when turbocharged using the stock crank, rods, block, head etc. (I've done it) That is how big some of the design margins are. You can't say that about any certified engine designs to my knowledge.

    We do need to manage piston and valve temperatures for longevity. You can either run rich as the OEMs do at high power levels or replace the stock parts with forged and stainless parts respectively. Many modern designs already have under piston oil jets to cool them and excellent valve and seat materials. These engines don't need any changes for aviation use in most cases.

    I agree with Brian about rpm, it is the main killer of longevity. This is why I had such great success with small turbocharged road racing engines vs. larger displacement atmo competitors. We only had to rev to 6500-7000 rpm to beat them with 1/2 to 2/3rds of the displacement while they had to flog their engines at 8500 to try to keep up. They often broke valvetrain stuff and rods/ cranks. My stuff never broke.
     
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  9. Sep 28, 2013 #129
    I overlooked that point in my comments and you are correct that WOT is when the throttle blade is parallel to the intake tract opening. I don't think most certified engines are exactly at WOT when they hit the redline on the tach. I think there is still some room for movement which will take the engines above the 2700 rpm point, but I may be wrong about that. I would think that it would be hard to get all engines of a same type to run at exactly 2700 rpms when the throttle plate is WOT. To me it would seem that there has to be some leeway in the combination of parts used to attain a given rpm setting. Not all jets or intake tracts or carbs are going to function exactly the same.......so 2700 rpms may occur at less than WOT due to jetting, intake variations, filters, and even the density of the atmosphere.
     
  10. Sep 28, 2013 #130

    rv6ejguy

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    We often fly at WOT for lower pumping losses at high altitudes. 8000 to 8500 feet gives about 75% power. Depends on prop rpm. With a CS prop, you have more choices in power settings via set rpm.
     
  11. Sep 28, 2013 #131

    Brian Clayton

    Brian Clayton

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    sure....take the prop off and it will hit 2700 at 10 percent throttle. :)
     
  12. Sep 28, 2013 #132

    Toobuilder

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    Right. With a constant speed prop, you set the RPM and forget it.
     
  13. Sep 28, 2013 #133

    Autodidact

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  14. Jun 26, 2015 #134

    ekimneirbo

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    Some reference info for LS engines

    [TD="width: 605, colspan: 8, align: center"]Gen III & Gen IV Small Blocks
    [TD="align: center"]Part Number[/TD] [TD="align: center"]Description[/TD] [TD="align: center"]Liters[/TD] [TD="align: center"]CID[/TD] [TD="align: center"]HP[/TD] [TD="align: center"]TQ[/TD] [TD="align: center"]Bore[/TD] [TD="align: center"]Stroke[/TD] [TD="align: center"]19165628[/TD] [TD="align: center"]LS327/327[/TD] [TD="align: center"]5.3[/TD] [TD="align: center"]327[/TD] [TD="align: center"]327[/TD] [TD="align: center"]347[/TD] [TD="align: center"]3.780"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]17801267[/TD] [TD="align: center"]LS1[/TD] [TD="align: center"]5.7[/TD] [TD="align: center"]346[/TD] [TD="align: center"]350[/TD] [TD="align: center"]365[/TD] [TD="align: center"]3.898"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]17801268[/TD] [TD="align: center"]LS6[/TD] [TD="align: center"]5.7[/TD] [TD="align: center"]346[/TD] [TD="align: center"]405[/TD] [TD="align: center"]395[/TD] [TD="align: center"]3.898"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19156262[/TD] [TD="align: center"]LQ9[/TD] [TD="align: center"]6.0[/TD] [TD="align: center"]364[/TD] [TD="align: center"]345[/TD] [TD="align: center"]380[/TD] [TD="align: center"]4.000"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]*19165484[/TD] [TD="align: center"]LS2[/TD] [TD="align: center"]6.0[/TD] [TD="align: center"]364[/TD] [TD="align: center"]400[/TD] [TD="align: center"]400[/TD] [TD="align: center"]4.000"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]*17802134[/TD] [TD="align: center"]LS364/440[/TD] [TD="align: center"]6.0[/TD] [TD="align: center"]364[/TD] [TD="align: center"]440[/TD] [TD="align: center"]404[/TD] [TD="align: center"]4.000"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]12611022[/TD] [TD="align: center"]L99[/TD] [TD="align: center"]6.2[/TD] [TD="align: center"]376[/TD] [TD="align: center"]430[/TD] [TD="align: center"]424[/TD] [TD="align: center"]4.065[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19171224[/TD] [TD="align: center"]LS376/485[/TD] [TD="align: center"]6.2[/TD] [TD="align: center"]376[/TD] [TD="align: center"]485[/TD] [TD="align: center"]475[/TD] [TD="align: center"]4.065"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19171225[/TD] [TD="align: center"]LS376/515[/TD] [TD="align: center"]6.2[/TD] [TD="align: center"]376[/TD] [TD="align: center"]515[/TD] [TD="align: center"]469[/TD] [TD="align: center"]4.065"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19201992[/TD] [TD="align: center"]LS3[/TD] [TD="align: center"]6.2[/TD] [TD="align: center"]376[/TD] [TD="align: center"]430[/TD] [TD="align: center"]424[/TD] [TD="align: center"]4.065"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19211978[/TD] [TD="align: center"]LSA[/TD] [TD="align: center"]6.2[/TD] [TD="align: center"]376[/TD] [TD="align: center"]556[/TD] [TD="align: center"]551[/TD] [TD="align: center"]4.065"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19201990[/TD] [TD="align: center"]LS9[/TD] [TD="align: center"]6.2[/TD] [TD="align: center"]376[/TD] [TD="align: center"]638[/TD] [TD="align: center"]604[/TD] [TD="align: center"]4.065"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19171821[/TD] [TD="align: center"]CT525[/TD] [TD="align: center"]6.2[/TD] [TD="align: center"]376[/TD] [TD="align: center"]525[/TD] [TD="align: center"]471[/TD] [TD="align: center"]4.065"[/TD] [TD="align: center"]3.622"[/TD] [TD="align: center"]19165058[/TD] [TD="align: center"]LS7[/TD] [TD="align: center"]7.0[/TD] [TD="align: center"]427[/TD] [TD="align: center"]505[/TD] [TD="align: center"]470[/TD] [TD="align: center"]4.125"[/TD] [TD="align: center"]4.000"[/TD] [TD="align: center"] [/TD] [TD="align: center"]* Discontinued[/TD] [TD="align: center"] [/TD] [TD="align: center"] [/TD] [TD="align: center"] [/TD] [TD="align: center"] [/TD] [TD="align: center"] [/TD] [TD="align: center"] [/TD]
    [/TD] [TD="width: 780, colspan: 12, align: center"]LS Compatibility - Heads vs. Intakes
    [TD="colspan: 4, align: center"]Intakes[/TD] [TD="colspan: 8, align: center"]Heads[/TD] [TD="width: 76, align: center"]Engine[/TD] [TD="width: 64, align: center"]Part #[/TD] [TD="width: 64, align: center"]Manifold[/TD] [TD="width: 64, align: center"]Port Type[/TD] [TD="width: 64, align: center"]12559855 LS1[/TD] [TD="width: 64, align: center"]12564824 LS6/LS2[/TD] [TD="width: 64, align: center"]12562319 LQ9[/TD] [TD="width: 64, align: center"]88958665 CNC LS6[/TD] [TD="width: 64, align: center"]88958622 CNC LS6[/TD] [TD="width: 64, align: center"]12582713 L76/L92[/TD] [TD="width: 64, align: center"]12615879 LS3[/TD] [TD="width: 64, align: center"]88958698 CNC L92[/TD] [TD="align: right"]88894339[/TD] [TD="align: right"]88958675[/TD] [TD="align: right"]12590123[/TD] [TD="align: right"]12610434[/TD] [TD="align: right"]25534416[/TD] [TD="align: right"]25534401[/TD] [TD="align: right"]19166952[/TD] [TD="align: right"]19172322[/TD] [TD="align: right"]12568976[/TD] [TD="align: right"]12610435[/TD] [TD="align: right"]25534413[/TD] [TD="align: right"]25534394[/TD] [TD="align: right"]19166948[/TD] [TD="align: right"]19166950[/TD] [TD="align: right"]19166954[/TD] [TD="colspan: 2"]No=not compatable[/TD] [TD="colspan: 3"]Yes=direct compatability[/TD] [TD="colspan: 4, align: center"]Intakes[/TD] [TD="colspan: 8, align: center"]Heads[/TD] [TD="width: 76, align: center"]Engine[/TD] [TD="width: 64, align: center"]Part #[/TD] [TD="width: 64, align: center"]Manifold[/TD] [TD="width: 64, align: center"]Port Type[/TD] [TD="width: 64"]19201807 LSX-L92[/TD] [TD="width: 64"]19201805 LSX-LS3[/TD] [TD="width: 64"]19213963 LSX-LS9[/TD] [TD="width: 64, align: center"]12578450 CNC LS7[/TD] [TD="width: 64"]19201806 LSX-LS7[/TD] [TD="width: 64"]19166981 LSX-CT[/TD] [TD="width: 64"]19166979 LSX-DR[/TD] [TD="width: 64, align: center"]12480090 C5R[/TD] [TD="align: right"]88894339[/TD] [TD="align: right"]88958675[/TD] [TD="align: right"]12590123[/TD] [TD="align: right"]12610434[/TD] [TD="align: right"]25534416[/TD] [TD="align: right"]25534401[/TD] [TD="align: right"]19166952[/TD] [TD="align: right"]19172322[/TD] [TD="align: right"]12568976[/TD] [TD="align: right"]12610435[/TD] [TD="align: right"]25534413[/TD] [TD="align: right"]25534394[/TD] [TD="align: right"]19166948[/TD] [TD="align: right"]19166950[/TD] [TD="align: right"]19166954[/TD] [TD="colspan: 2"]No=not compatable[/TD] [TD="colspan: 3"]Yes=direct compatability[/TD]
    LS1/LS6EFI Cathedral Yes Yes Yes Yes Yes No No No
    LS2/LQ44-bbl Cathedral Yes Yes Yes Yes Yes No No No
    LQ4/LQ9 N/A EFI Cathedral Yes Yes Yes Yes Yes No No No
    L76EFI L92 No No No No No Yes Yes Yes
    LS3EFI L92 No No No No No Yes Yes Yes
    L76/L92/LS34-bbl w/inj L92 No No No No No Yes Yes Yes
    L76/L92/LS34-bbl L92 No No No No No Yes Yes Yes
    L92/LS3LSX 4bbl L92 No No No No No Yes Yes Yes
    L92/LS3LSX 4bbl L92 No No No No No Yes Yes Yes
    LS7 '05-'08EFI LS7 No No No No No No No No
    LS7 '09EFI LS7 No No No No No No No No
    LS74-bbl w/inj LS7 No No No No No No No No
    LS74-bbl LS7 No No No No No No No No
    LSX 454LSX 4bbl LS7 No No No No No No No No
    LSX 4bbl LSX-CT No No No No No No No No
    LSX 4bbl LSX-DR No No No No No No No No
    LS1/LS6EFI Cathedral No No No No No No No No
    LS2/LQ44-bbl Cathedral No No No No No No No No
    LQ4/LQ9 N/A EFI Cathedral Yes Yes Yes No No No No No
    L76EFI L92 Yes Yes Yes No No No No No
    LS3EFI L92 Yes Yes Yes No No No No No
    L76/L92/LS34-bbl w/inj L92 Yes Yes Yes No No No No No
    L76/L92/LS34-bbl L92 Yes Yes Yes No No No No No
    L92/LS3LSX 4bbl L92 Yes Yes Yes No No No No No
    L92/LS3LSX 4bbl L92 Yes Yes Yes No No No No No
    LS7 '05-'08EFI LS7 No No No Yes Yes No No No
    LS7 '09EFI LS7 No No No Yes Yes No No No
    LS74-bbl w/inj LS7 No No No Yes Yes No No No
    LS74-bbl LS7 No No No Yes Yes No No No
    LSX 454LSX 4bbl LS7 No No No Yes Yes No No No
    LSX 4bbl LSX-CT No No No No No Yes Yes No
    LSX 4bbl LSX-DR No No No No No Yes Yes No
    [/TD] [TD="width: 913, align: center"]
    [TD="width: 721, colspan: 11, align: center"]LS Compatability - Heads vs. Blocks[/TD] [TD="colspan: 4, align: center"]Blocks[/TD] [TD="colspan: 7, align: center"]Heads[/TD] [TD="width: 76, align: center"]Engine[/TD] [TD="width: 64, align: center"]Part #[/TD] [TD="width: 69, align: center"]Bore Size[/TD] [TD="width: 64, align: center"]12559855 LS1[/TD] [TD="width: 64, align: center"]12564824 LS6/LS2[/TD] [TD="width: 64, align: center"]12562319 LQ9[/TD] [TD="width: 64, align: center"]88958665 CNC LS6[/TD] [TD="width: 64, align: center"]88958622 CNC LS6[/TD] [TD="width: 64, align: center"]12582713 L76/L92[/TD] [TD="width: 64, align: center"]12598594 LS3[/TD] [TD="width: 64, align: center"]88958698 CNC L92[/TD] [TD="align: right"]12561166[/TD] [TD="align: right"]12572808[/TD] [TD="align: right"]12568950[/TD] [TD="align: right"]12584727[/TD] [TD="align: right"]17802854[/TD] [TD="align: right"]25534427[/TD] [TD="align: right"]12480030[/TD] [TD="align: right"]19213964[/TD] [TD="align: right"]19166454[/TD] [TD="align: right"]19166097[/TD] [TD="colspan: 2"]No=not compatable[/TD] [TD="colspan: 3"]Yes=direct compatability[/TD] [TD="colspan: 2"]*=4.00 min Bore[/TD] [TD="colspan: 2"]**=4.125" min Bore[/TD] [TD="colspan: 2"]***=4.100" min Bore[/TD] [TD="colspan: 4, align: center"]Blocks[/TD] [TD="colspan: 7, align: center"]Heads[/TD] [TD="width: 76, align: center"]Engine[/TD] [TD="width: 64, align: center"]Part #[/TD] [TD="width: 69, align: center"]Bore Size[/TD] [TD="width: 64"]19201807 LSX-L92[/TD] [TD="width: 64"]19201805 LSX-LS3[/TD] [TD="width: 64"]19213963 LSX-LS9[/TD] [TD="width: 64, align: center"]12578450 CNC LS7[/TD] [TD="width: 64"]19201806 LSX-LS7[/TD] [TD="width: 64"]19166981 LSX-CT[/TD] [TD="width: 64"]19166979 LSX-DR[/TD] [TD="width: 64, align: center"]12480090 C5R[/TD] [TD="align: right"]12561166[/TD] [TD="align: right"]12572808[/TD] [TD="align: right"]12568950[/TD] [TD="align: right"]12584727[/TD] [TD="align: right"]17802854[/TD] [TD="align: right"]25534427[/TD] [TD="align: right"]12480030[/TD] [TD="align: right"]19213964[/TD] [TD="align: right"]19166454[/TD] [TD="align: right"]19166097[/TD] [TD="colspan: 2"]No=not compatable[/TD] [TD="colspan: 3"]Yes=direct compatability[/TD] [TD="colspan: 2"]*=4.00 min Bore[/TD] [TD="colspan: 2"]**=4.125" min Bore[/TD] [TD="colspan: 2"]***=4.100" min Bore[/TD]
    LS1/LS63.89" Yes Yes Yes Yes Yes No No No
    LQ4/LQ94.00" Yes Yes Yes Yes Yes Yes Yes Yes
    LS2/L764.00" Yes Yes Yes Yes Yes Yes Yes Yes
    L92/LS34.06" Yes Yes Yes Yes Yes Yes Yes Yes
    LSA/LS9 4.06" Yes Yes Yes Yes Yes Yes Yes Yes
    LS74.125" Yes Yes Yes Yes Yes Yes Yes Yes
    LS7*4.125" Yes Yes Yes Yes Yes Yes Yes Yes
    C5R4.12"-4.16" Yes Yes Yes Yes Yes Yes Yes Yes
    LSX S/B3.89" Yes Yes Yes Yes Yes * * *
    LSX3.99"-4.25" * * * * * * * *
    LSX TD3.99"-4.25" * * * * * * * *
    LS1/LS63.89" Yes No No No No No No No
    LQ4/LQ94.00" Yes Yes Yes No No No No No
    LS2/L764.00" Yes Yes Yes No No No No No
    L92/LS34.06" Yes Yes Yes No No No No No
    LSA/LS9 4.06" Yes Yes Yes No No No No No
    LS74.125" Yes Yes Yes Yes Yes Yes Yes Yes
    LS7*4.125" Yes Yes Yes Yes Yes Yes Yes Yes
    C5R4.12"-4.16" Yes Yes Yes Yes Yes Yes Yes Yes
    LSX S/B3.89" ** ** ** ** *** ** ** **
    LSX3.99"-4.25" ** ** ** ** *** ** ** **
    LSX TD3.99"-4.25" ** ** ** ** *** ** ** **
    [/TD] [TD="width: 862, colspan: 13, align: center"]LS Series Blocks
    [TD="width: 76, align: center"]Origin[/TD] [TD="width: 64, align: center"]Part #[/TD] [TD="width: 72, align: center"]Material[/TD] [TD="width: 64, align: center"]Deck Height[/TD] [TD="width: 79, align: center"]Bore[/TD] [TD="width: 52, align: center"]Main Bolt[/TD] [TD="width: 64, align: center"]Cap Material[/TD] [TD="width: 71, align: center"]Crank Jrnl Dia[/TD] [TD="width: 64, align: center"]Oiling[/TD] [TD="width: 64, align: center"]Rr Main Seal[/TD] [TD="width: 64, align: center"]Max Stroke[/TD] [TD="width: 64, align: center"]Max HP[/TD] [TD="width: 64, align: center"]Usage[/TD] [TD="align: center"]12561166[/TD] [TD="align: center"]Alum[/TD] [TD="align: center"]9.240[/TD] [TD="align: center"]3.89"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]Iron[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Wet[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.00"[/TD] [TD="align: center"]450[/TD] [TD="align: center"]Street[/TD] [TD="align: center"]12568950[/TD] [TD="align: center"]Alum[/TD] [TD="align: center"]9.240[/TD] [TD="align: center"]4.00"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]Iron[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Wet[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.00"[/TD] [TD="align: center"]450[/TD] [TD="align: center"]Street[/TD] [TD="align: center"]12584727[/TD] [TD="align: center"]Alum[/TD] [TD="align: center"]9.240[/TD] [TD="align: center"]4.065"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]Iron[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Wet[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.00"[/TD] [TD="align: center"]525[/TD] [TD="align: center"]Street[/TD] [TD="align: center"]17802854[/TD] [TD="align: center"]Alum[/TD] [TD="align: center"]9.240[/TD] [TD="align: center"]4.125"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]PM[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Dry[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.10"[/TD] [TD="align: center"]550[/TD] [TD="align: center"]Street[/TD] [TD="align: center"]25534427[/TD] [TD="align: center"]Alum[/TD] [TD="align: center"]9.240[/TD] [TD="align: center"]4.125"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]PM[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Dry[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.10"[/TD] [TD="align: center"]550[/TD] [TD="align: center"]Street[/TD] [TD="align: center"]12480030[/TD] [TD="align: center"]Alum[/TD] [TD="align: center"]9.240[/TD] [TD="align: center"]4.117"-4.160"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]8620 Steel[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Wet[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.10"[/TD] [TD="align: center"]900[/TD] [TD="align: center"]Pro[/TD] [TD="align: center"]12572808[/TD] [TD="align: center"]Iron[/TD] [TD="align: center"]9.240[/TD] [TD="align: center"]4.00"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]Iron[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Wet[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.00"[/TD] [TD="align: center"]500[/TD] [TD="align: center"]Street[/TD] [TD="align: center"]19166454[/TD] [TD="align: center"]Iron[/TD] [TD="align: center"]9.260[/TD] [TD="align: center"]3.99"-4.250"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]1045 Steel[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Wet[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.25"[/TD] [TD="align: center"]1500+[/TD] [TD="align: center"]Street/Pro[/TD] [TD="align: right"]19166097[/TD] [TD="align: center"]Iron[/TD] [TD="align: center"]9.700[/TD] [TD="align: center"]3.99"-4.250"[/TD] [TD="align: center"]6[/TD] [TD="align: center"]1045 Steel[/TD] [TD="align: center"]Std LS 2.56[/TD] [TD="align: center"]Wet[/TD] [TD="align: center"]1 Pc[/TD] [TD="align: center"]4.50"[/TD] [TD="align: center"]1500+[/TD] [TD="align: center"]Street/Pro[/TD]
    LS1/LS6
    LS2
    L92/LS3
    LS7
    LS7
    C5R
    LQ9
    LSX
    LSX
    [/TD] [TD="width: 924, align: center"]
    [TD="width: 871, colspan: 11"]LS Series Heads
    [TD="width: 76"]Part #[/TD] [TD="width: 119"]Origin[/TD] [TD="width: 63"]Material[/TD] [TD="width: 50"]Port Size[/TD] [TD="width: 83"]Valve Angle[/TD] [TD="width: 64"]Chamber CC's[/TD] [TD="width: 57"]Int Valves[/TD] [TD="width: 55"]Exh Valves[/TD] [TD="width: 70"]Port Type[/TD] [TD="width: 64"]Rocker Stud[/TD] [TD="width: 170"]Notes[/TD]
    12564825 Bare LS2 & LS6 Alum 210 15 degree 64.5 2.00 1.55 Cathedral Bolt Bare LS2/LS6
    12564824 Stock LS6 Alum 210 15 degree 64.5 2.00 1.55 Cathedral Bolt Hollow/Sodium filled Valves
    12576063 Stock LS2 Alum 210 15 degree 64.5 2.00 1.55 Cathedral Bolt Solid stem valves
    88958622 CNC LS6 Alum 250 15 degree 61.9 2.00 1.55 Cathedral Bolt 11.2 compression
    88958665 CNC LS6 Alum 250 15 degree 65 2.00 1.55 Cathedral Bolt 10.5 compression
    88958765 CNC LS2 Alum 250 15 degree 64.5 2.00 1.55 Cathedral Bolt Solid stem valves
    12582714 Bare L76/L92 Alum 260 15 degree 70 2.16 1.59 L92 Bolt Solid stem valves
    12582713 Stock L76/L92 Alum 260 15 degree 70 2.16 1.59 L92 Bolt Solid stem valves
    88958698 CNC L76/L92 Alum 279 15 degree 68 2.16 1.59 L92 Bolt Solid stem valves
    12598594 Stock LS3 Alum 260 15 degree 70 2.16 1.59 L92 Bolt Hollow/Sodium filled Valves
    12578450 Bare LS7 Alum 270 12 degree 70 2.20 1.61 LS7 Bolt Bare LS7
    12578449 Stock LS7 Alum 270 12 degree 70 2.20 1.61 LS7 Bolt Titanium/sodium filled valves
    25534428 As-cast LS7 Alum - 12 degree 66 2.20 1.61 LS7 Bolt Titanium/sodium filled valves
    12480005 * C5R 1st design Alum 210 11 degree 38 2.18 1.63 C5R Shaft As cast-no seats, guides *
    12480090 C5R 2nd design Alum 210 11 degree 30 2.18 1.63 C5R Shaft As cast-no seats, guides
    19201807 LSX-L92 Small Bore Alum 260 15 degree 70 2.00 1.55 L92 Bolt Hollow/Sodium filled Valves
    19201805 LSX-LS3 Alum 260 15 degree 70 2.16 1.59 L92 Bolt Hollow/Sodium filled Valves
    19201806` LSX-LS7 Alum 270 12 degree 70 2.20 1.61 LS7 Bolt Hollow/Sodium filled Valves
    19166981 LSX-CT Alum 302 11 degree 45 2.20 1.61 LSX-CT/DR Shaft CNC machined bare head
    19166979 LSX-DR Alum 313 11 degree 50 2.25-2.28 1.6-1.65 LSX-CT/DR Shaft CNC machined bare head
    *Discontinued
    [/TD]
    [/TD] [TD="width: 524, colspan: 5, align: center"]LS Series Head Gaskets & Bolts
    [TD="width: 85, align: center"]Part #[/TD] [TD="width: 143, align: center"]Engine[/TD] [TD="width: 76, align: center"]Thickness[/TD] [TD="width: 82, align: center"]Max Bore[/TD] [TD="width: 138, align: center"]Description[/TD] [TD="width: 85, align: center"]12498544[/TD] [TD="width: 143, align: center"]LS1 2002-2004[/TD] [TD="width: 76, align: center"].047"[/TD] [TD="width: 82, align: center"]3.92[/TD] [TD="width: 138, align: center"]Standard LS Bolt Pattern[/TD] [TD="width: 85, align: center"]12589226[/TD] [TD="width: 143, align: center"]LS1 & LS6[/TD] [TD="width: 76, align: center"].051"[/TD] [TD="width: 82, align: center"]3.92"[/TD] [TD="width: 138, align: center"]Standard LS Bolt Pattern[/TD] [TD="width: 85, align: center"]12589227[/TD] [TD="width: 143, align: center"]LS2[/TD] [TD="width: 76, align: center"].051"[/TD] [TD="width: 82, align: center"]4.02"[/TD] [TD="width: 138, align: center"]Standard LS Bolt Pattern[/TD] [TD="width: 85, align: center"]12610046[/TD] [TD="width: 143, align: center"]LS3 & L92[/TD] [TD="width: 76, align: center"].051"[/TD] [TD="width: 82, align: center"]4.080"[/TD] [TD="width: 138, align: center"]Standard LS Bolt Pattern[/TD] [TD="width: 85, align: center"]12582179[/TD] [TD="width: 143, align: center"]LS7[/TD] [TD="width: 76, align: center"].051"[/TD] [TD="width: 82, align: center"]4.140"[/TD] [TD="width: 138, align: center"]Standard LS Bolt Pattern[/TD] [TD="width: 85, align: center"]19170418[/TD] [TD="width: 143, align: center"]LSX[/TD] [TD="width: 76, align: center"].051"[/TD] [TD="width: 82, align: center"]4.100"[/TD] [TD="width: 138, align: center"]Standard LS & 6-Bolt Pattern Blocks & Heads[/TD] [TD="width: 85, align: center"]19170419[/TD] [TD="width: 143, align: center"]LSX[/TD] [TD="width: 76, align: center"].051"[/TD] [TD="width: 82, align: center"]4.200"[/TD] [TD="width: 138, align: center"]Standard LS & 6-Bolt Pattern Blocks & Heads[/TD] [TD="width: 85, align: center"]19170420[/TD] [TD="width: 143, align: center"]LSX[/TD] [TD="width: 76, align: center"].051"[/TD] [TD="width: 82, align: center"]4.250"[/TD] [TD="width: 138, align: center"]Standard LS & 6-Bolt Pattern Blocks & Heads[/TD] [TD="align: center"]17800568[/TD] [TD="align: center"]1/2004 & up LS Engines[/TD] [TD="colspan: 2, align: center"]Includes 15 bolts[/TD] [TD="width: 138, align: center"]5mm shorter than 1st Design[/TD] [TD="align: center"]12498545[/TD] [TD="align: center"]97-1/04 LS Engines[/TD] [TD="colspan: 2, align: center"]Includes 15 bolts[/TD] [TD="width: 138, align: center"] [/TD]
    [/TD] [TD="width: 770, colspan: 6, align: center"]LS Series Camshafts
    [TD="width: 76, align: center"]Part #[/TD] [TD="width: 132, align: center"]Description[/TD] [TD="width: 76, align: center"]Duration @ .050" lift[/TD] [TD="width: 82, align: center"]Max Lift (In) (1.7 rocker)[/TD] [TD="width: 83, align: center"]Lobe Seperation[/TD] [TD="width: 321, align: center"]Technical Notes[/TD] [TD="align: center"]12565308[/TD] [TD="align: center"]2002-2004 LS6 Cam[/TD] [TD="width: 76, align: center"]I:204 E:218[/TD] [TD="width: 82, align: center"]I:550 E:550[/TD] [TD="align: center"]117.5[/TD] [TD="width: 321, align: center"]Cam requires valve spring P/N 12586484[/TD] [TD="align: center"]12560950[/TD] [TD="align: center"]2001 LS6 Cam[/TD] [TD="width: 76, align: center"]I:207 E:217[/TD] [TD="width: 82, align: center"]I:525 E:525[/TD] [TD="align: center"]116[/TD] [TD="width: 321, align: center"]Cam requires valve spring P/N 12586484[/TD] [TD="align: center"]12480110[/TD] [TD="align: center"]ASA Cam[/TD] [TD="width: 76, align: center"]I:226 E:236[/TD] [TD="width: 82, align: center"]I:525 E:525[/TD] [TD="align: center"]110[/TD] [TD="width: 321, align: center"]Cam requires valve spring P/N 12586484 "ASA" cam for off-highway use[/TD] [TD="align: center"]12480033[/TD] [TD="align: center"]Hot Cam Kit[/TD] [TD="width: 76, align: center"]I:219 E:228[/TD] [TD="width: 82, align: center"]I:525 E:525[/TD] [TD="align: center"]112[/TD] [TD="width: 321, align: center"]Kit includes 16 LS6 Valve Springs P/N 12565117 and retainers[/TD] [TD="align: center"]88958733[/TD] [TD="align: center"]LS Hot Cam[/TD] [TD="width: 76, align: center"]I:219 E:228[/TD] [TD="width: 82, align: center"]I:525 E:525[/TD] [TD="align: center"]112[/TD] [TD="width: 321, align: center"]Cam only for Hot Cam Kit 12480033[/TD] [TD="align: center"]19166972[/TD] [TD="align: center"]LSX-454 Cam[/TD] [TD="width: 76, align: center"]I:236 E:246[/TD] [TD="width: 82, align: center"]I:600 E:600[/TD] [TD="align: center"]110[/TD] [TD="width: 321, align: center"]Max lift with 1.8 rockers .635/.635[/TD] [TD="align: center"]88958606[/TD] [TD="align: center"]Showroom Stock cam[/TD] [TD="width: 76, align: center"]I:239 E:251[/TD] [TD="width: 82, align: center"]I:570 E:570[/TD] [TD="align: center"]106.5[/TD] [TD="width: 321, align: center"]Showroom Stock racing design, requires hollow intake valves #12565311, hollow exhaust valves #12565312, valve springs #12586484, and aftermarket notched pistons or machined stock pistons[/TD] [TD="align: center"]12571251[/TD] [TD="align: center"]LS7[/TD] [TD="width: 76, align: center"]I:211 E:230[/TD] [TD="width: 82, align: center"](1.8 Rocker) I:591 E:591[/TD] [TD="align: center"]121[/TD] [TD="width: 321, align: center"]Stock LS7 camshaft[/TD] [TD="align: center"]12561721[/TD] [TD="width: 132, align: center"]LS1 2001-2004 LQ9 2002-2006[/TD] [TD="width: 76, align: center"]I:196 E:201[/TD] [TD="width: 82, align: center"]I:467 E:479[/TD] [TD="align: center"]116[/TD] [TD="width: 321, align: center"]Stock cam for 2002-2006 LQ9 and 2001-2004 LS1[/TD] [TD="align: center"]88958722[/TD] [TD="align: center"]LS Stage 2 Cam[/TD] [TD="width: 76, align: center"]I:227 E:239[/TD] [TD="width: 82, align: center"](1.7 Rocker) I:551 E:551[/TD] [TD="align: center"]108[/TD] [TD="width: 321, align: center"]Max lift with 1.8 rockers .583/.583[/TD] [TD="align: center"]88958723[/TD] [TD="align: center"]LS Stage 3 Cam[/TD] [TD="width: 76, align: center"]I:233 E:276[/TD] [TD="width: 82, align: center"](1.7 Rocker) I:595 E:595[/TD] [TD="align: center"]107[/TD] [TD="width: 321, align: center"]Max lift with 1.8 rockers .630/.630[/TD]
    [/TD] [TD="width: 910, align: center"]
    [TD="width: 910, colspan: 9"]LS Series Pistons
    [TD="width: 76"]Part #[/TD] [TD="width: 101"]Engine Size[/TD] [TD="width: 63"]Bore Size[/TD] [TD="width: 67"]Oversize[/TD] [TD="width: 83"]Rod Length[/TD] [TD="width: 64"]Pin Type[/TD] [TD="width: 64"]Comp Ratio[/TD] [TD="width: 71"]With Chamber[/TD] [TD="width: 321"]Description[/TD]
    88984245 5.7L 3.898" - 6.098" Pressed - 65.00 Hypereutectic LS1 & LS6 replacement
    88984246 5.7L 3.898" +.010" 6.098" Pressed - 65.00 Hypereutectic LS1 & LS6 replacement
    89017478 6.0L 4.000" - 6.098" Floated 10.90 65.00 Hypereutectic LS2 & LQ9 replacement
    89017479 6.0L 4.000" +.020" 6.098" Floated 10.90 65.00 Hypereutectic LS2 & LQ9 replacement
    12602624 7.0L 4.125' - 6.067" Floated 11.00 70.00 Hypereutectic LS7 replacement includes Titanium Rod
    89018171 7.0L 4.125" +.020" 6.067" Floated 11.00 70.00 Hypereutectic LS7 replacement
    19166957 LSX376 4.065" 6.098" Flat - 4032 Forged Aluminum -Piston comes w/ rings
    19166958 LSX454 4.185" LSX rod 0.866 Dished - 4032 Forged Aluminum -
    [/TD] [/TD] [TD="width: 696, colspan: 5, align: center"]LS Rings
    [TD="width: 85, align: center"]Part #[/TD] [TD="width: 69, align: center"]Bore Size[/TD] [TD="width: 76, align: center"]Oversize[/TD] [TD="width: 117, align: center"]Ring Thickness[/TD] [TD="width: 349, align: center"]Description[/TD] [TD="width: 85, align: center"]12499234[/TD] [TD="width: 69, align: center"]3.898"[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]1.5, 1.5, 2.5mm[/TD] [TD="width: 349, align: center"]Set of 8 ring packs, standard size for LS1 & LS6[/TD] [TD="width: 85, align: center"]12499236[/TD] [TD="width: 69, align: center"]4.000"[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]1.5, 1.5, 2.5mm[/TD] [TD="width: 349, align: center"]Set of 8 ring packs, standard size for 1999-2005 LQ4 & LQ9[/TD] [TD="width: 85, align: center"]12499235[/TD] [TD="width: 69, align: center"]3.780"[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]1.5, 1.5, 2.5mm[/TD] [TD="width: 349, align: center"]Set of 8 ring packs, standard size for 1999-2005 5.3L[/TD] [TD="width: 85, align: center"]89017484[/TD] [TD="width: 69, align: center"]4.000"[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]1.5, 1.5, 2.5mm[/TD] [TD="width: 349, align: center"]Production ring pack for 2005-2006 LS2 & 2006 L76[/TD] [TD="width: 85, align: center"]88894243[/TD] [TD="width: 69, align: center"]4.000"[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]1.5, 1.5, 2.5mm[/TD] [TD="width: 349, align: center"]Production ring pack for 2005-2006 LQ9[/TD] [TD="width: 85, align: center"]89017776[/TD] [TD="width: 69, align: center"]4.125"[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]1.2, 1.2, 2.0mm[/TD] [TD="width: 349, align: center"]Production ring pack for 2006 LS7[/TD] [TD="width: 85, align: center"]89017777[/TD] [TD="width: 69, align: center"]4.125"[/TD] [TD="width: 76, align: center"]+.020"[/TD] [TD="width: 117, align: center"]1.2, 1.2, 2.0mm[/TD] [TD="width: 349, align: center"]Oversize LS7 ring pack[/TD]
    [/TD] [TD="width: 779, colspan: 6, align: center"]LS Series Push Rods
    [TD="width: 85, align: center"]Part #[/TD] [TD="width: 132, align: center"]Engine[/TD] [TD="width: 76, align: center"]Material[/TD] [TD="width: 82, align: center"]Diameter[/TD] [TD="width: 83, align: center"]Length[/TD] [TD="width: 321, align: center"]Description[/TD] [TD="width: 85, align: center"]12593344[/TD] [TD="width: 132, align: center"]LS1, LS2, LS3, LS6 & L92[/TD] [TD="width: 76, align: center"]1010 Steel[/TD] [TD="width: 82, align: center"]5/16"[/TD] [TD="width: 83, align: center"]7.325"[/TD] [TD="width: 321, align: center"]Production pushrod[/TD] [TD="width: 85, align: center"]12593344[/TD] [TD="width: 132, align: center"]LS7[/TD] [TD="width: 76, align: center"]1010 Steel[/TD] [TD="width: 82, align: center"]3/8"[/TD] [TD="width: 83, align: center"]7.750"[/TD] [TD="width: 321, align: center"]Production pushrod[/TD]
    [/TD] [TD="width: 570, colspan: 6, align: center"]LS Series Valves
    [TD="width: 85, align: center"]Part #[/TD] [TD="width: 143, align: center"]Engine[/TD] [TD="width: 76, align: center"]Position[/TD] [TD="width: 92, align: center"]Valve Size[/TD] [TD="width: 82, align: center"]Stem Dia[/TD] [TD="width: 92, align: center"] [/TD] [TD="width: 85, align: center"]12565311[/TD] [TD="width: 143, align: center"]LS6[/TD] [TD="width: 76, align: center"]Intake[/TD] [TD="width: 92, align: center"]2.00"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Hollow Stem[/TD] [TD="width: 85, align: center"]12563063[/TD] [TD="width: 143, align: center"]LS2[/TD] [TD="width: 76, align: center"]Intake[/TD] [TD="width: 92, align: center"]2.00"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Solid Stem[/TD] [TD="width: 85, align: center"]12590773[/TD] [TD="width: 143, align: center"]L76 & L92[/TD] [TD="width: 76, align: center"]Intake[/TD] [TD="width: 92, align: center"]2.165"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Solid Stem[/TD] [TD="width: 85, align: center"]12605223[/TD] [TD="width: 143, align: center"]LSA[/TD] [TD="width: 76, align: center"]Intake[/TD] [TD="width: 92, align: center"]2.165"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Solid Stem[/TD] [TD="width: 85, align: center"]12569427[/TD] [TD="width: 143, align: center"]LS3[/TD] [TD="width: 76, align: center"]Intake[/TD] [TD="width: 92, align: center"]2.165"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Hollow Stem[/TD] [TD="width: 85, align: center"]12605524[/TD] [TD="width: 143, align: center"]LS9[/TD] [TD="width: 76, align: center"]Intake[/TD] [TD="width: 92, align: center"]2.165"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Titanium[/TD] [TD="width: 85, align: center"]12591644[/TD] [TD="width: 143, align: center"]LS7[/TD] [TD="width: 76, align: center"]Intake[/TD] [TD="width: 92, align: center"]2.20"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Titanium[/TD] [TD="width: 85, align: center"]12565312[/TD] [TD="width: 143, align: center"]LS6[/TD] [TD="width: 76, align: center"]Exhaust[/TD] [TD="width: 92, align: center"]1.50"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Sodium Filled[/TD] [TD="width: 85, align: center"]12563064[/TD] [TD="width: 143, align: center"]LS2[/TD] [TD="width: 76, align: center"]Exhaust[/TD] [TD="width: 92, align: center"]1.50"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Solid Stem[/TD] [TD="width: 85, align: center"]12582719[/TD] [TD="width: 143, align: center"]L76, L92 & LS3[/TD] [TD="width: 76, align: center"]Exhaust[/TD] [TD="width: 92, align: center"]1.59"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Solid Stem[/TD] [TD="width: 85, align: center"]12605525[/TD] [TD="width: 143, align: center"]LS9[/TD] [TD="width: 76, align: center"]Exhaust[/TD] [TD="width: 92, align: center"]1.59"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Sodium Filled[/TD] [TD="width: 85, align: center"]12578455[/TD] [TD="width: 143, align: center"]LS7[/TD] [TD="width: 76, align: center"]Exhaust[/TD] [TD="width: 92, align: center"]1.61"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]Sodium Filled[/TD] [TD="width: 85, align: center"]17801930[/TD] [TD="width: 143, align: center"]LS2 & LS6[/TD] [TD="width: 76, align: center"](4)Intake & (4)Exhaust[/TD] [TD="width: 92, align: center"]I -2.00" E-1.50"[/TD] [TD="width: 82, align: center"]8mm[/TD] [TD="width: 92, align: center"]LS6 Hollow & Sodium Valves[/TD]
    [/TD] [TD="width: 698, colspan: 7, align: center"]LS Series Valve Springs
    [TD="width: 85, align: center"]Part #[/TD] [TD="width: 143, align: center"]Engine[/TD] [TD="width: 76, align: center"]Style[/TD] [TD="width: 92, align: center"]Installed Height[/TD] [TD="width: 82, align: center"]Open Pressure[/TD] [TD="width: 82, align: center"]Max Lift[/TD] [TD="width: 138, align: center"]Description[/TD] [TD="width: 85, align: center"]12586484[/TD] [TD="width: 143, align: center"]Standard LS2, LS6 & LS6[/TD] [TD="width: 76, align: center"]Beehive Style[/TD] [TD="width: 92, align: center"]1.800" Installed @ 90# pressure[/TD] [TD="width: 82, align: center"]1.250" @ 295 # pressure[/TD] [TD="width: 82, align: center"].570"[/TD] [TD="width: 138, align: center"]Individual[/TD] [TD="width: 85, align: center"]12499224[/TD] [TD="width: 143, align: center"]Standard LS2, LS6 & LS6[/TD] [TD="width: 76, align: center"]Beehive Style[/TD] [TD="width: 92, align: center"]1.800" Installed @ 90# pressure[/TD] [TD="width: 82, align: center"]1.250" @ 295 # pressure[/TD] [TD="width: 82, align: center"].570"[/TD] [TD="width: 138, align: center"]Set of 16 P/N 12586484[/TD] [TD="width: 85, align: center"]12589774[/TD] [TD="width: 143, align: center"]Standard L76/L92 Springs[/TD] [TD="width: 76, align: center"]Beehive Style[/TD] [TD="width: 92, align: center"]1.800" Installed @ 90# pressure[/TD] [TD="width: 82, align: center"]1.300" @ 264# pressure[/TD] [TD="width: 82, align: center"].530"[/TD] [TD="width: 138, align: center"] [/TD] [TD="width: 85, align: center"]12578457[/TD] [TD="width: 143, align: center"]LS7[/TD] [TD="width: 76, align: center"]Beehive Style[/TD] [TD="width: 92, align: center"]1.960" Installed @ 101# pressure[/TD] [TD="width: 82, align: center"]1.368" @ 310# pressure[/TD] [TD="width: 82, align: center"].600"[/TD] [TD="width: 138, align: center"] [/TD]
    [/TD] [TD="width: 774, colspan: 8, align: center"]LS Timing Components
    [TD="width: 85, align: center"]Part #[/TD] [TD="width: 143, align: center"]Engine[/TD] [TD="width: 76, align: center"]Part[/TD] [TD="width: 76, align: center"]Oil Pump System[/TD] [TD="width: 394, colspan: 4, align: center"]Description[/TD] [TD="width: 85, align: center"]12588670[/TD] [TD="width: 143, align: center"]LS2[/TD] [TD="width: 76, align: center"]Timing Chain Dampner[/TD] [TD="width: 76, align: center"]Standard[/TD] [TD="width: 394, colspan: 4, align: center"]Will not Fil LS1 & LS6 fitted with P/N 88958607[/TD] [TD="width: 85, align: center"]12581276[/TD] [TD="width: 143, align: center"]LS7[/TD] [TD="width: 76, align: center"]Timing Chain Dampner[/TD] [TD="width: 76, align: center"]LS7 2-stage[/TD] [TD="width: 394, colspan: 4, align: center"]1.1mm thinner than 12588670[/TD] [TD="width: 85, align: center"]12576407[/TD] [TD="width: 143, align: center"]LS1, LS2 & LS6[/TD] [TD="width: 76, align: center"]1X Camshaft Gear[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 394, colspan: 4, align: center"]3-bolt design; uses (3) bolts P/N 12556127[/TD] [TD="width: 85, align: center"]12586481[/TD] [TD="width: 143, align: center"]LS1, LS2 & LS6[/TD] [TD="width: 76, align: center"]4X Camshaft Gear[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 394, colspan: 4, align: center"]3-bolt design; uses (3) bolts P/N 12556127[/TD] [TD="width: 85, align: center"]12585994[/TD] [TD="width: 143, align: center"]L92 - Combination Cam gear and VVT activator[/TD] [TD="width: 76, align: center"]4X Camshaft Gear[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 394, colspan: 4, align: center"]1-bolt design; use P/N 12588151[/TD] [TD="width: 85, align: center"]12556582[/TD] [TD="width: 143, align: center"]All Non LS7[/TD] [TD="width: 76, align: center"]Crankshaft Gear[/TD] [TD="width: 76, align: center"]Standard[/TD] [TD="width: 394, colspan: 4, align: center"]Works with 12576407 and 12586481 cam sprockets[/TD] [TD="width: 85, align: center"]12581278[/TD] [TD="width: 143, align: center"]LS7[/TD] [TD="width: 76, align: center"]Crankshaft Gear[/TD] [TD="width: 76, align: center"]LS7 2-stage[/TD] [TD="width: 394, colspan: 4, align: center"]Works with 12576407 and 12586481 cam sprockets[/TD] [TD="width: 85, align: center"]12586482[/TD] [TD="width: 143, align: center"]All LS[/TD] [TD="width: 76, align: center"]Timing Chain [/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 394, colspan: 4, align: center"]Fits all LS 1997-2008[/TD] [TD="width: 85, align: center"]12585997[/TD] [TD="width: 143, align: center"]L92 & LS3[/TD] [TD="width: 76, align: center"]Timing Chain Tensioner[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 394, colspan: 4, align: center"]Includes retainer and bolts[/TD] [TD="width: 85, align: center"]12556127[/TD] [TD="width: 143, align: center"]LS1,LS2,LS6 & LS7[/TD] [TD="width: 76, align: center"]Camshaft Gear bolts[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 394, colspan: 4, align: center"]For use with 3-bolt (non V.V.T.) cams[/TD] [TD="width: 85, align: center"]12588151[/TD] [TD="width: 143, align: center"]L92[/TD] [TD="width: 76, align: center"]Camshaft Gear bolts[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 394, colspan: 4, align: center"]Combination bolt and valve for variable valve timing - use with 12585994 Camshaft Gear[/TD]
    [/TD] [TD="width: 791, colspan: 6, align: center"]LS Crankshafts
    [TD="width: 85, align: center"]Part #[/TD] [TD="width: 82, align: center"]Application[/TD] [TD="width: 82, align: center"]Material[/TD] [TD="width: 76, align: center"]Reluctor Wheel[/TD] [TD="width: 117, align: center"]Stroke[/TD] [TD="width: 349, align: center"]Description[/TD] [TD="width: 85, align: center"]89017522[/TD] [TD="width: 82, align: center"]97-04 LS1/LS6 & 2005 LS2[/TD] [TD="width: 82, align: center"]Nodular Cast[/TD] [TD="width: 76, align: center"]24X[/TD] [TD="width: 117, align: center"]3.622"[/TD] [TD="width: 349, align: center"]Balanced for 3.898" bore engines[/TD] [TD="width: 85, align: center"]12588612[/TD] [TD="width: 82, align: center"]2006 and up LS2[/TD] [TD="width: 82, align: center"]Nodular Cast[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]3.622"[/TD] [TD="width: 349, align: center"]Balanced for 4.00" bore engines[/TD] [TD="width: 85, align: center"]12568820[/TD] [TD="width: 82, align: center"]LS7[/TD] [TD="width: 82, align: center"]Forged Steel[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]4.00"[/TD] [TD="width: 349, align: center"]Rebalancing required if LS7 rods and pistons are not used. 2-stage Oil pump[/TD] [TD="width: 85, align: center"]19171619[/TD] [TD="width: 82, align: center"]LS[/TD] [TD="width: 82, align: center"]Forged Steel[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]4.00"[/TD] [TD="width: 349, align: center"]Rebalancing required if LS7 rods and pistons are not used. Standard wet sump Oil pump[/TD] [TD="width: 85, align: center"]12559353[/TD] [TD="width: 82, align: center"]1997-2005[/TD] [TD="width: 82, align: center"]-[/TD] [TD="width: 76, align: center"]24X[/TD] [TD="width: 117, align: center"]-[/TD] [TD="width: 349, align: center"]1997-2005 Reluctor Wheel[/TD] [TD="width: 85, align: center"]12586768[/TD] [TD="width: 82, align: center"]2006 and up [/TD] [TD="width: 82, align: center"]-[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]-[/TD] [TD="width: 349, align: center"]2006 and newer Reluctor Wheel[/TD] [TD="width: 85, align: center"]89060436[/TD] [TD="width: 82, align: center"]All LS[/TD] [TD="width: 82, align: center"]Rear Main Seal[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]-[/TD] [TD="width: 349, align: center"]Rear Main Seal for all LS engines[/TD]
    [TD="width: 701, colspan: 6, align: center"]LSX Crankshafts[/TD] [TD="width: 85, align: center"]Part #[/TD] [TD="width: 100, align: center"]Note[/TD] [TD="width: 82, align: center"]Material[/TD] [TD="width: 76, align: center"]Reluctor Wheel[/TD] [TD="width: 117, align: center"]Stroke[/TD] [TD="width: 241, align: center"]Description[/TD] [TD="width: 85, align: center"]19170388[/TD] [TD="width: 100, align: center"]8-bolt flywheel or flexplate required[/TD] [TD="width: 82, align: center"]4340 premium steel[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]3.622"[/TD] [TD="width: 241, align: center"]Reguires Balancing[/TD] [TD="width: 85, align: center"]19170389[/TD] [TD="width: 100, align: center"]8-bolt flywheel or flexplate required[/TD] [TD="width: 82, align: center"]4340 premium steel[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]3.750"[/TD] [TD="width: 241, align: center"]Reguires Balancing[/TD] [TD="width: 85, align: center"]19170390[/TD] [TD="width: 100, align: center"]8-bolt flywheel or flexplate required[/TD] [TD="width: 82, align: center"]4340 premium steel[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]4.00"[/TD] [TD="width: 241, align: center"]Reguires Balancing[/TD] [TD="width: 85, align: center"]19170391[/TD] [TD="width: 100, align: center"]8-bolt flywheel or flexplate required[/TD] [TD="width: 82, align: center"]4340 premium steel[/TD] [TD="width: 76, align: center"]58X[/TD] [TD="width: 117, align: center"]4.125"[/TD] [TD="width: 241, align: center"]Reguires Balancing[/TD]
    [/TD] [TD="width: 791, align: center"]
    [TD="width: 791, colspan: 6, align: center"]LS Connecting Rods[/TD] [TD="width: 85, align: center"]Part #[/TD] [TD="width: 82, align: center"]Application[/TD] [TD="width: 82, align: center"]Material[/TD] [TD="width: 76, align: center"]Piston Fit[/TD] [TD="width: 117, align: center"]Length[/TD] [TD="width: 349, align: center"]Description[/TD] [TD="width: 85, align: center"]12568734[/TD] [TD="width: 82, align: center"]1997-2004 LS1 & LS6[/TD] [TD="width: 82, align: center"]PM[/TD] [TD="width: 76, align: center"]Press[/TD] [TD="width: 117, align: center"]6.098"[/TD] [TD="width: 349, align: center"]Sold Individually[/TD] [TD="width: 85, align: center"]12617570[/TD] [TD="width: 82, align: center"]2005-2008 LS2 & LS3[/TD] [TD="width: 82, align: center"]PM[/TD] [TD="width: 76, align: center"]Float - Bronze Bushing[/TD] [TD="width: 117, align: center"]6.098"[/TD] [TD="width: 349, align: center"]Sold Individually[/TD] [TD="width: 85, align: center"]12586258[/TD] [TD="width: 82, align: center"]LS7[/TD] [TD="width: 82, align: center"]Titanium[/TD] [TD="width: 76, align: center"]Float - Bronze Bushing[/TD] [TD="width: 117, align: center"]6.067"[/TD] [TD="width: 349, align: center"]Sold Individually[/TD] [TD="width: 85, align: center"]19166964[/TD] [TD="width: 82, align: center"]LSX I-beam[/TD] [TD="width: 82, align: center"]4340 Forged Steel[/TD] [TD="width: 76, align: center"]Float - Bronze Bushing[/TD] [TD="width: 117, align: center"]6.000"[/TD] [TD="width: 349, align: center"]Set of 8, weight matched - NOT compatible with production pistons-for use with LSX Pistons INCLUDES 7/16" 12-point SAE 8740 rod bolts[/TD] [TD="width: 85, align: center"]19166965[/TD] [TD="width: 82, align: center"]LSX I-beam[/TD] [TD="width: 82, align: center"]4340 Forged Steel[/TD] [TD="width: 76, align: center"]Float - Bronze Bushing[/TD] [TD="width: 117, align: center"]6.100"[/TD] [TD="width: 349, align: center"]Set of 8, weight matched - NOT compatible with production pistons-for use with LSX Pistons INCLUDES 7/16" 12-point SAE 8740 rod bolts[/TD] [TD="width: 85, align: center"]19166966[/TD] [TD="width: 82, align: center"]LSX I-beam[/TD] [TD="width: 82, align: center"]4340 Forged Steel[/TD] [TD="width: 76, align: center"]Float - Bronze Bushing[/TD] [TD="width: 117, align: center"]6.125"[/TD] [TD="width: 349, align: center"]Set of 8, weight matched - NOT compatible with production pistons-for use with LSX Pistons INCLUDES 7/16" 12-point SAE 8740 rod bolts[/TD] [TD="width: 85, align: center"]19166967[/TD] [TD="width: 82, align: center"]LSX I-beam[/TD] [TD="width: 82, align: center"]4340 Forged Steel[/TD] [TD="width: 76, align: center"]Float - Bronze Bushing[/TD] [TD="width: 117, align: center"]6.150"[/TD] [TD="width: 349, align: center"]Set of 8, weight matched - NOT compatible with production pistons-for use with LSX Pistons INCLUDES 7/16" 12-point SAE 8740 rod bolts[/TD] [TD="width: 85, align: center"]19166968[/TD] [TD="width: 82, align: center"]LSX I-beam[/TD] [TD="width: 82, align: center"]4340 Forged Steel[/TD] [TD="width: 76, align: center"]Float - Bronze Bushing[/TD] [TD="width: 117, align: center"]6.200"[/TD] [TD="width: 349, align: center"]Set of 8, weight matched - NOT compatible with production pistons-for use with LSX Pistons INCLUDES 7/16" 12-point SAE 8740 rod bolts[/TD] [TD="width: 85, align: center"]11600158 Rod Bolt[/TD] [TD="width: 82, align: center"]LS6[/TD] [TD="width: 82, align: center"]-[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]-[/TD] [TD="width: 349, align: center"]Recommended in Gen III performance engines-Bolts have greater strength than pre-2000 rod bolts- 1 per package[/TD] [TD="width: 85, align: center"]11609825 Rod bolt[/TD] [TD="width: 82, align: center"]LS7[/TD] [TD="width: 82, align: center"]-[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]-[/TD] [TD="width: 349, align: center"]Required for LS7 builds-bolts are stretch to yield and can not be reused - 1 bolt per package[/TD] [TD="width: 85, align: center"]89017573 Rod Bearing[/TD] [TD="width: 82, align: center"]All except LS7/LS9[/TD] [TD="width: 82, align: center"]-[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]-[/TD] [TD="width: 349, align: center"]Connecting Rod Bearing - (1) per rod required[/TD] [TD="width: 85, align: center"]89017811 Rod Bearing[/TD] [TD="width: 82, align: center"]LS7/LS9[/TD] [TD="width: 82, align: center"]-[/TD] [TD="width: 76, align: center"]-[/TD] [TD="width: 117, align: center"]-[/TD] [TD="width: 349, align: center"]Connecting Rod Bearing - (1) per rod required[/TD]
    [/TD]
     
    Hot Wings and Midniteoyl like this.
  15. Jan 19, 2016 #135

    HoneyMoneyToo

    HoneyMoneyToo

    HoneyMoneyToo

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    Fist post and joined just to comment on this. I know this is an older thread but ... When my dad died in 01 I got his brand new off the lot 5.3 vortec 327ish cubic inch (LS based) reg cab silverado 2wd. I was 14 at the time and my mother drove me everywhere in it until I was 15 -16. I am from a small town with LOTS of dirt roads so I Pounded and Pounded on that engine. I raced people, I did donuts, all kinda stuff a teenager would do :). I even ended up putting a 125hp shot of NOS on it for when I went to the drag strip. That motor NEVER let me down. My water pump went out once and a fuel pump but other than that no problems from engine. I busted 2 transmissions with it and had 160,000 ish miles on it before I took it out to put another LS based motor 6.0 vortec (LS based, LQ9) around 2011. If that motor can take all that I put it through all those years and WOT pulls and still run, its got my vote. With that said If you took an almunium 427 or 408 (6.0 bored .30 over with 4" stroke) used top quality parts (forged, with ARP fastners, ect) set up for low end TQ and HP "derated" it and only ran at 2500-3000 RPM for the redline like other plane engines. Whats the difference besides air cooled, dual spark plugs ect? Just a LOT cheaper you can set up redundant sensors and such (to an extent) ... No matter what they are all man made and are all prone to break from defects or what not, invest in a BRS parachute :)
     
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  16. Jan 20, 2016 #136

    ekimneirbo

    ekimneirbo

    ekimneirbo

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    Good first post...I like the way you think.
     
  17. Jan 20, 2016 #137

    pistoncan

    pistoncan

    pistoncan

    Well-Known Member

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    Even a Merlin engine used a gear reduction unit.
     
  18. Jan 20, 2016 #138

    HoneyMoneyToo

    HoneyMoneyToo

    HoneyMoneyToo

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    Yes, the prev post was right about the weight, they all differ but are very close to that number. If you were using a LS motor I would most certainly put a thrust bearing for forces applied from the prop. They are not designed to take those types of forces and would have premature failure some where in the bottom end.

    My truck was dynoed for 408 HP and 476 TQ at the rear wheels. That means I am making "about" 450 and 500 at the crank. That is on 100 shot with a 228R Texas Speed (228/228 .588/.588 114LSA) cam other than that and a tune and bigger fuel injectors the motor is all stock. From what I have found on the online forums (performancetrucks.net mostly) the stock bottom ends will hold up to about 600 HP and I believe that is a 4 bolt main in the LQ9? I am not sure so don't quote me on that.

    Also you can send your stock heads to Texas Speed and for $750 they will port/polish them, they are aluminium from factory flow good and cheap so why not? You can get a New aluminum 6.0 block for $1,200 or a bigger bore LS3 for $1,600... I bought my LQ9 at a swap meet from a junk yard, $1,500 for wiring harness, gas pedal, computer, and complete engine with alternator/PS pump ect with a 3 month warranty. It is an iron block but im sure you could find an aluminium one and bore it out and get all new bearings (thats a new motor) or buy new. You would still have less than $10,000 in it and another $5,000? for the reduction drive or direct drive, just need something to carry the thrust to the block through the transmission mounts (mine has 6-7 bolts with 2 thick dowels to line it up) but I am saving $20-25,000 over the "Certified" motors. BUY a BRS parachute with left over $ and you will be golden. Don't put all your eggs in one basket, if they both fail, it was time for you to go "home".

    Maybe in 20-30ish years when I am 50-60 I can afford a new $50,000 engine for my $200,000 velocity (with my BRS parachute built in):)

    Also, I have 2 engines (5.3 Iron blocks with aluminum heads) wiring harnesses, computers, HP Tunners tuning software, ect. if anyone reading this wants to build a test engine (LS based) from the parts or try to develop some parts/engine that are for "experiential aviation" purposes.
     
  19. Jan 20, 2016 #139

    Midniteoyl

    Midniteoyl

    Midniteoyl

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    A quick Google search shows a couple of article were they got 100+ HP on both the 4.8L and 5.3L by simple head and cam swaps..
     
  20. Jan 20, 2016 #140

    ekimneirbo

    ekimneirbo

    ekimneirbo

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    I have a couple of LS1 blocks. They can only be overbored slightly and the early ones can only
    be honed ....so there is not much you can do unless you have Darton sleeves installed. By the time you do that I think its better to buy an LS3 ($1700) or LS7 ($2700) Block. The LS 7 has some additional features besides just a larger bore. Realize that if you operate either of these two engines (LS3 with 4" stroke) (LS7 ) at an rpm range of 3000 (3500) or so , the ports in the heads will
    not need to be large, and in fact, something like stock LS1 heads should work well. Just clean them up and blend them near the valve seats. Haven't checked lately, but last time I bought some LS1 heads, they could be had for as little as $100 a pair. There is also a couple of aluminum SUV or Truck heads that flow like the LS6 but have bigger combustion chambers...which works out well for keeping compression low. The thing is that if you plan to do something like this, I'd sell the engines you have and get the block and heads you plan to use....rather than put money into experimenting with something you can't use later. Once you have the block and heads, most other components will have similar prices because you don't need the high performance parts. A truck intake gives more low end torque and you can get them as new take offs with the fuel rails and injectors for maybe $150. What ever you buy, remember that you are only turning 3000 rpms so
    air flow will be just fine with low performance parts. Don't waste money on a high performance cam if a stock truck cam will give the low rpm power. I have some info on reccommendations for cam selection. The crux is that its all about cylinder filling. You only need to get half as much air into the engine in one minute at 3000 rpms. Don't need bigger injectors or throttle body.

    How do you like your HP tuners software?
     
    spaschke likes this.

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