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Old 11-15-2008, 11:47 AM
boatanchors boatanchors is offline
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street big block compression

1971 454 2 bolt main. i was just curious is the compression limit on a big block before running higher octane fuel was the same as a small block. or if it would be higher like 12:1 or lower like 8.5:1. i know im not going to ride the edge on my compression but whats the average on a pump gas streetable big block?
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