piper5177 Posted November 30, 2006 Share Posted November 30, 2006 Does anyone know the cfm numbers at 25" or 28" on an unmolested E31 head with stock valves? I have one I am using for my street setup with a .460" lift 270/280 duration cam. I am hoping for 115 cfm with this setup for street use on pump gas, but does anyone know it will flow that much with that lift? Quote Link to comment Share on other sites More sharing options...
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