Tuning For Detonation

MOPAROFFICIAL said

They don't. 32 degrees full advance is where mine pulled best .
I think you should put the stock plate back in it and remove only the heavy spring leaving the light one that should give you about 18 at idle and 15 advanced left in the curve. Or screw a bolt into it and grind both sides off to eat up the advance.

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Well.....there IS no stock plate. There's nothing in stock form to limit the total advance. I heard back from Don and this is the only plate they offer. I mean really, how hard would it be to make two? A low advance and the standard one. The standard one goes from zero to 18 in 2 degree increments. It shouldn't be too difficult to make one from zero to 12 beginning with 4. Evidently this distributor is different somehow and requires different slot sizes to achieve the correct total advance.