On a V8 maximum possible power production (NA) is going to be roughly 2 hp per CFM flow. This is naturally aspirated. Forced induction is obviously going to be different.
I think your confused with CI .
As for velocity, here is a real world example. I swapped out 275 cc 4V cleveland heads that flowed 340 cfm for 225 cc aluminum heads that flow about 320 cfm and picked up about 10 mph in the quarter.
So did you test with all the same variables except the head correct?
You have yet to answer my questions about RPM.....What rpm are you making the power at?
250 cfm with a 302 your going to make 500 hp?
To achieve maximum average hp, you need to use the minimum runner cross section that will support the flow you need up top. Go look at some of the engine masters motors and the tiny runners they use...
Maybe you missed my perfect examples.
Flow is just one aspect of heads. What about acsa. Thats more important.
Air flow makes power not displacement, even the most basic of engine builders knows that.
Then why are those idiots out there building stoker motors....Silly them... Every one should run a 255.
Like I said again and again its a combination of parts...