Doh! That didn't occur to me, because I have no way to directly measure distributor timing. Still, I've heard all-in timing should not exceed 40ยบ, typically.
No that is full throttle balls to the wall. At that point, the vacuum is out because with the carb wide open, there is no vacuum, so that is initial + mechanical. Also that can vary some but 40 (actually less nowadays) is a good figure
I was astounded to learn that G3 hemis want WAY WAY less, more like low 20's at the crank