Model A Ford Engine for Aircraft

Email I got when I enquired about the Donovan model A motor 3 months ago.
Thank you for your interest in our Model A Ford parts & services. The Donovan Model D engine is no longer available, we delivered the last one about 3 months ago.
Thank you,
Dennis Piranio

 

Ken had always said that the engine made between 65 and 70 h.p.. He had a dyno sheet from a builder who built a very similar engine for a street rod. I didn't find the info after he died. I always thought the engine puts out about 60 h.p.. The torque at 2000 rpm on the chart you posted was higher than I expected. His engine will turn 2100 rpm during climb out with a 76 x 46 prop.