I'm just curious.......so humor me. Why is it important to know the speed of the air going into the engine? Not like you can influence it much. Seems pretty combo dependent.
You MUST control air speed. It's more important than CFM ever was, or ever will be. Most Pcar heads can only take 260 FPS of air speed without issue. A well prepped Pcar head may get close to 300 FPS but you will have spent a bunch of time and effort for not much gain.
You can do many things to control air speed. If all you do is make the hole bigger...anyone can do that. You have to control air speed. You also have to learn that less CFM can and will make more power. Especially if you work with your flow bench. At other than 28 inches of depression. And flow the ports backwards.
