Case head flow August 17, 2021 11:46AM
Wondering if anybody can tell me cam numbers on 504 heads before and after being ported. Intake and exhaust both thx.

Re: Case head flow August 17, 2021 01:26PM
Cam numbers?

Re: Case head flow August 17, 2021 01:31PM
With stock valves .600 lift intake 220-240cfm exhaust 180-200cfm. Surely someone has some different numbers as well but that’s my 2 cents

Re: Case head flow August 19, 2021 04:45AM
"Depends on who does em" numbers are close to what I've seen, by cleaning up the ports on a basic job using stock valves for a limited rpm class. Better numbers can be achieved if you want to spend more $. If you're going to do it, I'd switch to automotive type valves for a better selection of retainers and springs.

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