Port velocity average target fps?

Phreakish said
I'm no cylinder head expert, but it seems to me that velocity will be a result and not necessarily something to target.

To Chad in the video fps and csa seemed to be the two most important aspects which means the flow is the one that needs to be adjusted. Not saying that's how it must be done, he just was vague on the one part he seems to consider most important.

Phreakish said
.On a street/strip setup people have good luck with "too small" of a head than too large. Probably because bigger really only benefits at the top of the tach, it makes things worse elsewhere.
The formulas and numbers are good to ballpark things and spot check choices, but I wouldn't treat them as gospel either. For a street strip engine, it's probably OK to let the velocity run higher than you would for a dedicated racer.
Air has to accelerate with each valve event, and so lower target velocity can help when extreme rpms reduce the valve open time by reducing how much the air has to speed up. Obviously there's also resonant tuning impacts from the intake and the exhaust and are also significantly impacted by the cam, but all things equal the lower velocity port will pass more air through at maximum rpm. Of course, rarely do all other things remain equal!

I take all this stuff with a grain of salt, most us aren't building max effort engines, some seem to get super focus on one these max effort aspect of performance and lose site of all the rest and want to apply it to everything.

Especially out of place when people want to do a basic 4bbl cam exhaust and tune to their stock running engine.

For me it's more about the puzzle of it, I like adding pieces.