Oh you are really testing my memory. I'll guess and if I am wrong it will take two seconds for someone to correct me. CCW advances,CW retards. Then put the fuel that you plan to run,advance the timing till it pings,and back it off just enough to make it quit pinging. That is what chevy's like.
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72 GMC Sierra SWB almost finished---- 84 Softail
Olive Branch MS
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72 GMC Sierra SWB almost finished---- 84 Softail
Olive Branch MS
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