Re: is this a points system Distibutor or regular one?
Advace the timing till it starts to sing proper. Drive. Make sure you have good premium fuel. If you get destination retard some. Use a vac guage to help set air fuel. It's not perfect. My favorite tool is a wide band a/f guage. It gets you dialed in fast and makes seting the jetting up in a carb very simple. You can see exactly what your adjustments do to the efficentcy of the combustion. Worth every penny to buy a good one and the effort to install. Best addon I did for the truck.
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