So some how stock eliminator engines can make power with very little head flow small valves and little port csa but my 302 heads can't possible do that?
There's no magic in this they just use every bit of air that they get into the engine. If you cant understand that then you couldn't possibly understand that the HUGE difference in outright size between the minimum csa of an Air Gap and that of a Street master is perfect example of when tested on that engine that tiny intake runner area didn't make that much difference. If it didn't make that much difference its because that "area" in total wasn't that much of a restriction.
So which is it can a small port small valve 318 head make power on a 318/360 or not? A Yes or No answer will suffice.