Originally Posted by montecarlo84
At what rpm is a dizzy fully advanced?
It depends on how it's setup.
The springs/weights determine the timing curve of the distributor.
Most distributors can also be changed as to the total amount of timing advance.
So, to find that out, you'll need to find someone with a distributor machine to spin it up and find out how much total advance, what RPM the advance starts, and how fast the advance ramps in.