dual point distributor

chewy said
I had to re-wire the top of mine about 2 years ago. The points were grounding out completely.

I agree with cudamark, it could also be dwell on one side is set too narow and when RPM's go up enough it causes it to act as grounded.

Check the wire around the breaker plate for cracks and grounds. Use a meter to check to make sure you have continuity and non-continuity. when points opened or closed.

If wiring checks out, Try getting it to run/vac/rev with just one set of points first. I usually take a paper match stick, or a piece of a match-book and place between the set of points I'm not working to. Adjust one-side and then the other. I like to get them to exactly 30 on each side. Then when combined, total dwell should bump up to about 38.

Chewy,
Do you do that while the car is running? blocking off the 2nd set of points i mean. The car runs until i apply vac. to it. Then it just shuts off.. I dont really get the point of the dual point ignition. Is electronic ign better? I would assume so. I do like have the original dist that came with the S car. I looked at the wires last night and saw very good tight connections and no corrosion or dirt...I spun it and watched the points and one would close just as the other would open, but thet were never both open at the same time. Does that mean anything?...I didn't put a guage on them to measure the gap...I'll do that tonight.