Since when does where the cams sit (or how many there are) have anything to do with flow?
You are aware that it is technically feasible to have 16 valves with a single camshaft? And that a well designed 8-valve head could conceivably flow better than a poorly designed 16-valve one?
Amusingly enough, Hondas (which have been DOHC 16valve for ages) are renowned for having ****ty torque...
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