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Timing
There are 2 separate timing functions - vacuum and centrifugal. Basically, you want 34 to 36 total centrifugal at about 2800 rpm total (centrifugal). The best way to measure is with a timing tape or dial back timing light. If you post your distributer numbers, I can look up the amount of mechanical (centrifugal) advance built in. The factory slows the curve, so you can use 1 lighter spring on 1 of the weights. This brings the curve in quicker. Set this with vacuum advance disconnected and plugged. Then hook up vacuum advance to manifold vacuum. You will probably need to adjust your idle. Then you can dial in vacuum; you probably need about 10* vacuum. This is done with a specific canister or a timing kit (like Crane). Most V8's run well with this curve. Vacuum advances timing based on engine load while centrifugal is purely controlled by rpm. This is how I do it...
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