I would've thought that higher octane fuel lets the motor run max timing without fear of detonation or killing power when pulling timing out. BTW, anybody else remember the story about the loose, dry trailer ball rattling around in the trailer hitch and triggering the block sensor into thinking the motor was in detonation? Crazy stuff!
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1962 Biscayne O-21669 MKIV/M-22
1962 Bel Air Sport Coupe 409/1,000
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