Good Initial Timing and Too much Total Timing Problem. Seeking guidance to minimize total timing. 1969 Swinger 340 4 Gear

66fyssh said
Initial Advance - engine at idle and vacuum advance plugged

"all-in" - vacuum advance still plugged, increase engine RPM until timing stops increasing. This is where you want 32-36ish. I'll add, this is the combination of initial plus mechanical advance from the weights in the distributor.

Then when you add vacuum advance it can shoot up into the 50's.

This clarifys the process greatly.

Thanks