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Walter_Middie Walter_Middie is offline
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Join Date: May 2006
Location: Snohomish, WA
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Advance usually increases with piston size/area - larger piston area needs slightly longer times for the flame front to completely burn - so more piston area, more total advance at high RPM. I don't know if your increase from 3.0 to 3.2 involved bore size or stroke or both, but I bet they are close, so the amount of advance is either the same or a very small amount more.

Certainly higher octane will also allow more advance.
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Old 07-26-2020, 11:46 AM
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