Just to clarify what you said Denny,

Quote Originally Posted by DennyW
With what you have as far as settings go, as I understand it, 8º is base timing. Easy enough to see

Intermediate advance is 3 1/2 at 800, that's centrifugal at rpm of distributor.

Full advance is 10 at 2100. full mechanical? crank or dist deg?

Takes 4 of vacuum to start the plunger.

Max advance distributor degrees at 15" is 12º. is this max vacuum advance?

That's almost half (more than half ?...8+10+24 = 36)of what you are saying you are going to try. total should not be over 36º
Trying to clarify where you are talking crank degrees and where you are talking distributor degrees...thanks