12-23-2017, 02:31 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
10.5:1 is not high compression.
Almost every one of my engines leaves here with 10-10.5:1 and will easily run on 91-93 octane.
That camshaft *should* work unless it was installed way advanced.
But something is really wrong if you need race gas, retarded timing, and a slow curve in a Cobra....
I'm glad your mechanic owns a COPO Camaro, but he should have all kinds of warning sirens going off in his head right now that something is not right.
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