Ford 1969 galaxie xl
That all depends on the fuel yor using, what engine mods have been done, etc. Stock was 6 degrees advanced ignition timing with the vacuum hose disconnected and plugged at idle. HTH
and or carb..bring it up to 3 thousand rpm hold it there and advance till it just misses a little then retard it 2 degrees..
No fair, that's power tuning, and with today's fuel it's ping city.
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