With that (34ยบ @ 3400rpm), where does your initial end up? ..with an idle rpm of what?
Yes, every engine is different and takes what it takes. Just curious. Having started with a '73 engine in my car and an stock initial timing nowhere close to reasonable or effective, I'm surprised to find how much initial advance a 340 likes.
I had a variety of springs from past dizzy's. I think I am pretty close to what I wanted.
I am also experimenting with using ported vs non-ported vacuum and adjusting my intitial setting.
Its time consuming but fun !