my 360 might have had 550 + horses. when i put it in calcutator on 60ft, mph ,et its different . 360 .040 flat top 4 cast crank finally died lightly ported j heads 540 racer brown cam.1.6 cranes rockers ran best 10.37 than put reported eddies on last year 10.13 . strokerkit is easy horsepower without a big cam for street don