LS3 - Supercharged

Discussion in 'Chevy' started by TXFlyGuy, Dec 6, 2017.

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  1. Dec 6, 2017 #1

    TXFlyGuy

    TXFlyGuy

    TXFlyGuy

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    For those needing (wanting) more power, GM Performance Parts offers the LS3 (LSA) in a supercharged package.

    450 hp @ 4250 rpm.
    500 hp @ 4800 rpm.

    That should be enough.
     
  2. Dec 6, 2017 #2

    Voidhawk9

    Voidhawk9

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    More interesting, IMHO, would be turbo-normalization.
    Those numbers are not much higher than the LS376/480, which lacks the weight and complexity of the supercharger.
     
  3. Dec 8, 2017 #3

    TXFlyGuy

    TXFlyGuy

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    Turbo would not be an option with the exhaust setup. Yes, our LS376/480 did 430 hp @ 4500 rpm.
    A supercharger would be nice cruising at FL180.
    As we like to cruise in the teens, an O2 tank is being added, plus a cockpit heater!
     
  4. Dec 8, 2017 #4

    jac

    jac

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    Supercharger should remove any concerns you have/had about short exhaust stacks as well.
     
  5. Dec 8, 2017 #5

    TFF

    TFF

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    You just need two blower speeds like the real thing.
     
  6. Dec 8, 2017 #6

    TXFlyGuy

    TXFlyGuy

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    At FL210, they run in low blower, burning 1 gallon per minute. At FL240 and above, they go into high blower. This will consume about 2 gallons per minute.

    As it turns out, the LS3 Supercharged GM Performance Motor is too heavy, by about 100 pounds.
     
  7. Dec 8, 2017 #7

    TFF

    TFF

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    Yea but go the extra 10,000 ft and reap the true airspeed or pull it back and go for range. RVSM P-51. Wave at passengers.
     
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  8. Dec 8, 2017 #8

    Voidhawk9

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    Ah, I forgot to consider it in your setup. If I arrange my rads right, I will have room to 'upgrade' later to a twin-turbo setup, should I have the budget and madness to do so. :whistle:
    Are you using automotive-style heating? I'm planning to use a heat exchanger fed off the radiator inlet plenum, P-51 style. Varying the flow through the heat exchanger will vary the heat. Should have decent pressure to flow plenty of air, too.

    This just made my day. :gig:
     
  9. Aug 9, 2018 #9

    dsigned

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    I wonder if a centrifugal blower would be lighter?
     
  10. Aug 9, 2018 #10

    pictsidhe

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    A suitable manifold is a standard part of a turbo conversion. The Supercharged LS3 may need no internal mods for a turbo conversion.
     

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