Yes, I do. Any tips on adjusting the mixture on a BBD?
21 degrees mechanical advance is alot, add to that the vacuum advance you have now you know way it is pinging.
With the vacuum advance disconnected and the port capped off what is your total timing at 3200rpm?
Mechanical advance is 30 degrees at 3200 RPM, with 9 degrees initial. That's with the vacuum capped. I'd like to run 15-20 initial.
I replaced the yellow/green spring that was in the distributor with a heavier one from a kit (the one sold on .org), but I left the other spring in place. That's the very heavy one with a long loop on one end so that it doesn't do anything until higher RPM. The stock spring gave at least 28 degrees of mechanical advance.
I do have a distributor from a 79 Lebaron (same car I got my 2-barrel manifold from) but I haven't taken it apart yet.
