wedgie
Well-Known Member
My original '63 318 sistributor vacuum canister is bad. The arm is stamped with a 10. Is that the amount of vacuum required or the advance amount? I can't seem to find a 10. Closest is 10.5, then 11, 12 etc.
Remember its DISTRIBUTOR ADVANCE AMOUNT....its 2x that number in crankshaft degrees. For a low performance 318 engine, 10.5 or 11 would be just fine IMO....the tension of the internal spring in the diaphragm assembly determines the RATE of advance while the link determines the total vacuum advance.Believe it is the total advance amount when full vacuum is applied. I would think the 10.5 would be fine. Run the 10.5 and never look back.