Thread: Substituting Shelby block for Iron SO
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Old 02-27-2003, 01:25 PM
wtcobra wtcobra is offline
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Join Date: Feb 1999
Location: Evansville,IN, IN
Cobra Make, Engine: Contemporary-Aluminum 484 FE
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Mike-
I have a set of E-brok MR heads that flow 353 intake and 273 exhaust and a set of Dove SK heads that flow 335 intake and 240 exhaust, both are 2.25 intake and 1.75 exhaust and I am using tulips. I have been told by several shops that they thought they could get another 10 or so cfm on the E-broks. It is also my understanding that I should have probably used nail head valves. What is your experience with tulip vs nailheads. I am using 45 degree cut.

Thanks,
Wayne Turpin
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