It's funny how really no body is answering his question. 440 vs 360 both having there stock stroke crankshaft. Both having the same hp. Both running the same weight 3000 lbs. He said match your gears and tq converter. 500 hp is just that 500 hp. the bigger stroke will get you out a little easier, hp is what pulls the same on top end. The converter should stay in your power band. So actually, it boils down to the chassis/drivetrain tuneup to see who is first at the finsh I would say. Drag coeficient could play a roll in it also. Maybe i'm wrong, but I do know it isnt about a body or 4 inch cranks or any of the other stuff he is asking for