Mine was a lo compression 73 cast crank 340.1.88 intakes and a small .204/.214 duration cam. stock 2 1/4" exhaust to silent 22" mufflers and 1 7/8" tailpipes. I doubt if it was much more than 250 hp. But it had strong bottom end. I never raced it but the fellow i sold it to took it to the track once and made 3 or 4 passes. just put it in drive, feathered it to full throttle or it would just burn the 21570r 14's. His best was 14.05 at 98.5 mph