Engine size 502 x 466

This is to help a friend. If you use the same heads, ported d0ve's and victor intake w/dominator how much more hp will you make with a 502 over a 466. cam will be ordered for the application. I told him that a flat top piston, rollercam 466 will make about 530-560 hp and that a flattop piston 502 will make about 630-680. all help and opinions welcome.

40 horsepower increase is a pretty common result.

Sometimes with limited heads and top end parts the motor may not make more peak hp, but make more torque and better averages = Go Faster....