I was watching someone porting Ford FE heads and since on those the pinch is part of the intake, the head is really just the short side area and bowl, kind of made me think the first inch or so of the port is more part of the intake runner than the head itself obviously it's all one from chamber to carb, actually did a quick calculation and each intake stroke on a 360 equals about 600-800cc depending on ve% so basically the total volume of the port runner and probably some of the plenum and which all happens roughly under millisecond per intake stroke.
Got me thinking if it would be helpful to think of the port in a more of the FE type way. Bowl/short side, port entrance/runner? And to think of the volume of the runner as more of a round in the chamber ready to be shot in to the cylinder. (High to low pressure)?