I guess it didn’t sink in what I was trying to get across to you. How much of a gain would you see from 25 cfm, how about 24 cfm, how about 26 cfm. I’m for sure betting more that 30 horsepower.
Heck if I know.
I have always went by the general rule of thumb 2 horse per cfm.
I know the Bloomer heads( if you put a ton of stock in flow numbers..I don’t) reach around 300 cfm peak. But have been proven to support way more than 600 horsepower.
Guess it depends on the bench and other stuff regards numbers.
My old W5 heads went 299 on a bench Best machine used, and made 700 according to track numbers. Another set of W5 heads a very well known Mopar head guy and engine builder did went just barely over 300 on Vic Bloomers bench years ago
Ryan told me mine went over 330 after he did them initially, so as far as numbers go, I tend to take them sceptically.