Double Plane Intake

nm9stheham said

I suspect you mean 1 HP per 2 cfm.... or is this running on a Holley 1920 1-BBL? Took a minute for that to compute LOL

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I'm was talking about the head cfm rule of thumb 2 hp per cfm. The magnum head is supposed to flow around 205 cfm.
You don't see too many street cam and cr hit that rule even a lot of the engines done on engine masters challenge don't even.