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Old 01-13-2013 | 11:17 PM
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av8tor1977
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Default RE: Something strange going on here....

ORIGINAL: SkyPilot101

12:1 compression hot rods on the street and race track using only pump premium

Now, Them were the day's !
Yeah, no kidding. I had one 401 in an AMX I built that was a bit over 12.5:1 compression. The cranking compression was 220 lbs.!! Ran just fine on premium. Won a bucket load of races with that car...

Yep, those were the days. Now I have a 454 "built to the hilt" Chevy in my Blazer. I built it with only 9.5:1 compression but still I have constant problems with detonation using premium fuel.

AV8TOR
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