Evans waterless coolant

rich006 said
Yes, I do. Any tips on adjusting the mixture on a BBD?

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.

I am not familiar with a BBD?
That super lean mixture is most likely adding to your pinging issue. You need to correct this first.

Something is not adding up.
Your initial timing is 9* your mechanical advance is 20*
Thus 9*+20*=29* Total timing
You need to have the distributor set up on a distributor machine. Guessing at which springs to use is dicey at best.