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OK, how is the best way to determine the correct (highest) initial timing....



What I like to do is with vacuum advance unhooked and plugged advance timing by turning the distributor until I get idle set how I like it (most vacuum method will work) check and see what the in gear idle timing is at and put one or two light springs in the dizzy till you can achive this initial and still have the say 36 total.

I like to do this rather than welding slots as sometimes that gives you a hard starting car.