Constant or Ported Vacuum Source for Distributors? ...AGAIN!

After our last discussion on this I went out to my coronet to play around with the advance, needless to say I found the diaphragm bad.

Actually I would not have guessed that. LOL. I just assume that there's a certain percentage of speculative "what if" threads.
Hopefully my new can comes in today, I plan on hooking it up to ported and playing around a bit to see if I notice any difference...
I think we talked about this in the last few posts (other thread). If you want a good comparison, start with the same vacuum advance. The only change to make is use the ported source, unless that takes away too much timing at idle.

Since the vac pod is leaking, if weather and time permits, plug the vacum line and just experiment with the intial and mechanical. See how it will run with no vacuum advance at idle. That's what's going to happen anyway when you go ported. Its also what you'll need to do anyway to measure out the mechanical advance curve.