Question for the head porting experts.

Cuda416 said
Ok, we're going to disagree to disagree.

First of all, I'm not talking about turning passenger car heads into race heads, I'm talking theory.
Second, there are people on this board who easily get small block heads to over 260 CFM so I'm not sure where the 200cfm number comes from especially since stock magnums are 210-220 out of the box.

Thanks for you're contribution.

I said 200 or more out of the worst heads. I have seen top professional porters get 246 intake out of 302 castings which do not lend themselves to porting. It depends on your skill level and experience porting.