Rich Carb

maybe i am confused .... just trying to understand your point ....here is my take on it...a vacuum advance unit only advances at high vacuum.... so your car is in retarted mode when starting becuase of no vacuum ....the total we all agree on i think, it is the fifty something that i am in need of understanding .... at road speed ( cruising ) you have some vacuum...causing the advance unit to engage..... tip into the throttle and the vacuum advance looses vacuum and retards... hard throttle it goes back to total advance 35 degrees .....my misunderstanding lies in the advantage of using a vacuum advance at all on a perf motor....
we all can learn if willing to listen ...just explain how the vac adv builds more power ,,, drivability yes but not power from what i can see ...please explain so we can all understand . I would like to know , and i am not starting a beef ...just trying to see your side. thanks