[RichSchmidt]

Thats impressive because it is on those little tires and with stock suspention.Inside the engine is a whole different ballgame. .800" lift solid roller cam,14:1 compression,heads ported to the limits of the castings,any size valves ect.If it is a stock casting 396 block I would say that it couldnt be much more then about 475 cubes,and more likly 450 cubes.It could be .125" over with a half fill,could run a 4 3/8" crank with modern stroker profiled steel rods and real short piston skirts.A legal fast engine should easily put 150 hp over the best sorted legal stocker.