[Excaliber]

36 total sounds good. Not surprising that you get some vacuum action sitting in the garage reving it up, the engine is not under "load", hence vacuum is present.

10 base plus 15 mechanical advance =25, which does sound a little on the low side, but maybe not! Figure 25 advance will ONLY happen under WOT (wide open throttle) and load (pulling the car). Anything less will result in more advance.

I personally DON'T like only mechanical advance. This is typically used for race type motors and the total advance SHOULD be carefully calculated (which it SELDOM is)!

Ernie