The sad thing about BBC's running that fast is that you need 550+ cubes to touch the 8's. Im pretty sure if you could build a LS motor to 600 cubes it would be stupid how slow a BBC would look comparatively. Just sayin. Lets say cube for cube...we will even go with big cubes cuz "life dont begin till 500cubes"...so a 502LSX vs a 502BBC I bet your BBC will get SMOKED by a long shot. The LSx will make more power for less money and doesnt need a carb.