Not Ranked
I went from 68 primary jets all the way tp 80's in the front and 86's in the rear. It ran best on the dyno and had best 02 readings with 70 in front and 76 in rear with a 8.5 power valve and 28 front squirter and 31 rear squiter. I am at about 450 feet asl. Ford said to use 80 and 86 jets but that was way rich for mine. They were right on the money as far as timing goes. Cant get this miss out of it though. I also had a bracket welded on the car before I got it but I thought MSD boxes either worked or didnt? I am at a loss....I am using a 750 holley by the way.
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