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Generally, FE motors require more advance, e.g., 38-42 degrees due to the flame travel in the combustion chamber burning at slower rates than say, a small block 289-351 head design. Small blocks seem to like 32-34 degrees full advance.
Chassis dyno time will tell you exactly where to put your final full advance at. Just creep up a little at a time and look at your HP and torque readings after each pull.
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