Pontiac GTO Forum - View Single Post - Exaust backfiring
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post #52 of (permalink) Old 03-31-2019, 12:18 PM
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Lemans guy, that makes sense. But I read elsewhere you wanted a base timing of 10-14 with vacuum of 10, so 24* at idle. The problem is I’d be more like 6-8 * base to limit total to 36*.

Is there a way to correct for this?

1965 GTO Convertible 3 speed tri-power drum brakes originally

Current setup:
400 cu in with tri-power
4 speed Muncie
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