Trick flow

famous bob said

If this is true, why do larger pipes flow more than smaller pipes at the same pressure ? Altho raising the air speed does contribute a bunch . More to it than meets the eye.

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Larger as in cross sectional area...yes. Larger as in length...no. CSA and length both play a part in volume. Velocity, turbulence, frictional loss, and other variables factor into flow rate also. Head port volume means nothing. Everything out to the atmosphere must also be factored into volumetric equations (head, intake, spacers, carb, air cleaner, ect). The only direct effect volume has is reaction time to vacuum changes.