David Vizard - Which to prioritize - PORT FLOW or PORT VELOCITY?

Australian company CHI builds Clevelland style heads they call 3V. They started with basically the 2V ports with the 4V quench combustion chambers. Now they have a range of port volumes to match the engine displacements.
Yes I know.
Ford Australia built many 302C engines over the years and used them for a number of years after Ford North America dropped them.

Port volume has to match the displacement and intended RPM, but velocity is of prime importance to efficient cylinder filling.
Ideally but obviously it ain't as sensitive as some make it out.


People bring velocity a lot especially warn about too little velocity never really hear warnings about too much though (which is a thing), but those that warn seem to have no idea what the right velocity or csa or port volume is but their sure you probably need smaller than your thinking of.