WebJan 16, 2016 · Showing the results of porting a set of LS 241 heads to get 270+ cfm intake and 200+ cfm exhaust flow.Results:Intake runner 215 ccExhaust runner 81 ccFollowi... WebJan 1, 1998 · The 915 was a performance-minded redesign of the big-block head, featuring revised ports while retaining the closed-chamber configuration (typical factory chamber …
Vortec Cylinder Heads: The Definitive Guide NastyZ28.com
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B.B. - Learning About Heads - The Flat-Spot
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