lets revisit timing

ir3333 said
A good curve for a 10:1 340 usually falls around 10 initial with another 24 mechanical for a total of about 34 at around 3000 rpm without vacuum advance which may add another 16 or so for a cruising total around 50.
how might the engine performance differ with totals of 30 - 36 at wot ( no vac adv.)
..would it be noticeable?

I don't think it will make a difference at WOT if you have the vacuum hooked up or not, there wont be enough vacuum to pull the advance unit till you let off the gas. That is what I'm saying.
At wot there will be a difference between 30 and 36, it will have more power at 36.