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along with messing with the timing again, which we have adjusted quite a bit already.




You are going to need to recurve your distributor. No way around that one. I would try first setting it up for 18 initial, 38 total. Then if the motor likes it and doesn't fight back when trying to restart the motor when hot, keep tweaking the initial up as high as you can, but recurve to keep the total at 38. And you'll want all your advance in around the 2500rpm range.

I do agree with the other replies, that cam is a bit big for a 383 with 3.23 gears and a 3000rpm converter.