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Loadco You didn't say which carb you are using or intake manifold. Any way Look at the manifold and see if it is a dual plane. If yes, the right side of the carb controls the left side cylinders. You want to go 2 sizes smaller on the MAIN jets for the rich side and 2 sizes larger for the lean side. If it is a single plane, without a divider or turtle, left is of carb goes to left side head. Go no more than 2 sizes without rechecking A/F. Try for around 12.7-12.9. Better to be rich and not hurt the motor than lean. Lean makes more power but with the gas today, I would be adding additives. These additives will affect o2 sensors to a small degree. I would use your A/F meter for checking but wouldn't leave it in the pipe for long term. Check the local speed shop for jet kits. If you have a jet drill kit you can open up them yourself. Buy 1 set for spares of the orginial size. If it is a single plane manifold you may need to have it ported to match each cylinder if you want to get crazy. FE does have a couple of hotter running cylinders than the rest. Welcome to the ERA Club. Rick Lake
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