it is no theory that minimum int cross section limits cylinder filling in the comp stroke, thus limiting the peak engine speed of the engine,, you cannot "cam" the motor to run past where the int port will peak,, though many think you can and try to do it causing you to loose power everywhere,,

i have a dyno here,, and see it,, as with talking with my friends/customers who race nhra,,, super stock,, comp,,, or pro stock