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pw520a

octane and correct plug gap

By pw520a, in 1969-70 Technical Forum

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pw520a    19

pw520a
Posted

on my  rebuilt stock 390 I have a petronix 1 with a flame thrower coil and I am gaping the plugs at 040 it runs fine, but not sure if gap is correct? Also I have been using the highest octane gas at the pump, once again its running fine but do I need the highest octane?

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