Thread: Happy Fathers Day to ALL
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Old 06-21-2011, 08:00 AM
csx4910 csx4910 is offline
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Cobra Make, Engine: Black CSX 4910, Roush 511 8 stack
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9.5:1. I believe others have always run 91 octane in these motors without problems. I just know hte hesitation goes away and it feels like I picked up quite a few deat of the pants horsepower with 100 octane in the tank
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