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#5
02-20-2007, 02:29 AM
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Re: Holley carb power valve questions
The engine has 2" primary headers, HEI distributor, I think they're 1971 oval port heads(to lower compression), stock flat L78 intake and I'm going to assume stock cam. If I remember correctly, when I checked the compression and vacuum it was reading around 13 at idle. So I'm thinking the 6.5's will be too low. I would rather get the power valves right the first try so I'm in no hurry. Thanks guys.
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69 Z28 JL8, #'s match - being restored 
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