09-25-2009, 12:57 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
I'll go way out on a limb and say that most of us that have had our heads worked on probably land in the vicinity of the KC Stage 2 numbers. Now that's a really broad statement, so please no flames. Here's what Keith wrote about his Stage 2 numbers a few years ago:
Stage 2 Flow numbers
October 28 2003, 9:29 PM
We flow our heads at 28 inches of water which is pretty much the industry standard. The stage2 Edelbrock heads with a 2.19/1.75 valves flow as follows. Intake .400/280, .500/300, .600/318, .650/322 and the exhaust .400/198, .500/220, .600/235, .650/240. These numbers vary a few cfms each way. These are the numbers on what we call our stret strip stage 2 heads. We can change the valve angles and back-cuts on the valves and get as much as 335 on the intake at .700 and 250 at .700 on the exhaust. If someone needs real big flow number shtere is always our CNC heads that flow real big numbers. Thanks Keith
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