Thread: Compression ratio for 91 octane
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Old 01-14-2009, 03:08 AM
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Location: Castalia, Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
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I'm running 11-1 on 94 octane, aluminum heads. I would suspect that with 91 octane somewhere in the 10-10 1/2 range would be the max.
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