Why is ther no formula to figure out port volume?

I'm no math wiz by any means... or an engine wiz for that matter. There's a ton of talk however on intake port volume and a million different theories on it. Since and engine is a machine and the are many givens (or constants) why can't figuring out optimal port volume be as simple as plugging in: bore, stroke, avg. shift rpm ect... to a formula and voila: optimal port volume?

Of course there are variables such as port inlet shape and how good the mid lift flow is. But even still, there's got to be a way.

Maybe there is a formula out there and I've never seen it.
Author: admin