My best combo was always 12 degree static timing, plus 12 degrees mechanical, plus 12 degrees vacuum advance.
I always limited the max mech advance with fixed stops in the slots where the dist weights swing out, to about half of the maximi
Surely you mistyped that. 24 degrees? THIRTY four, maybe. "In the day" my factory stock 71, I used to run a lot closer to 38-40 "total" with vacuum on top of that. This was a hi compression 71 engine, "allegedly" 10.X :1.
The old 70RR with the 340 in it would "run right with" a stocker 383 RR
