Try locking out your dizzy at 35 and hook the vacuum advance to manifold vacuum. You'll have to dial back your idle, but it should help considerably. You can always swap it back to what you have if you don't like it. Your low end responsiveness and mileage should improve significantly.
Thanks, it's on the list of possible tweaks already
Since I drive it on the street mostly, do I want to be locked out? Concerned over pinging at low speed
As you say, I can try it and see.
What I have now is actually a super-light spring so that it cranks easy, then it hits the loop of a heavy OEM spring as soon as it starts... So to lock it out and still be able to start hot, I'd just put in another super-light spring instead, at least for a test.
