a stock X-head will flow about 220cfm @ .500" to .550"
a typical stock 360 head will flow about 180cfm @ .450" lift.
273/318 stock heads are way worse yet.
(FLOWED @ 28"Hg)
I have a flow sheet from my old heads with 1.88 valves that flowed 189cfm 25 inches of depression, so less depression than your #'s from old stan weiss sheets which means they flow more than that at 28 depression don't they?
I also have a sheet from J&J machine that shows a stock valve 3 angled VJ that flows 199-205 and falls off after .500, some even fell off just after .450 lift. If you put a better multi angled VJ to'em then you'd get bigger [stan weiss] #'s.
Now what?
Are we argue and race flow benches/sheets?
I don't see anything wrong with what Rumble said, it's the average/Idea thats important to the question, right?
