GLENN!
Bill is right on. I run a totally locked distributor with 36 degs on a track with LONG straights, where you can use fourth gear . 38 to 40 degs on a short tracks where your in second and third gear, and never in fourth. If you have trouble starting the engine when hot, use a starter button to get the engine turning over first. Autocross? As much timming as it'll start with. DICK