Surge problem at speed

dano said

Have you check the reluctor gap in the distributor? Also, to just replace he distributor is pretty generic. What is you static and total timing? Is the vacuum advance hooked up and have you disconnected it to see if you issue goes away? Have you tried a different ignition box and is the case to yours grounded really well?

The Pertronix has a janky way to adjust the mechanical advance. If you want an easy to adjust drop in the Jegs billet distributor is pretty good considering the price and it uses the stock cap. A member here, halifaxhops sells curved stock distributors as well if you don't to mess with setting one up yourself.

[FOR SALE] - Mopar distributors

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I will take a look at the timing, but I probably failed to mention that the distributor and previous carburetor were in the car for 6 years together and running well, prior to it being fried during the charging system work. Vacuum advance is hooked up, and was with the previous carburetor as well. The ignition was one of the cheap Proform setups (although it worked pretty well for 6 years) originally when I switched from points to electronic. I will check to see if the issue goes away by disconnecting the vacuum advance.

As far as the Petronix goes, I was looking at the Flame-Thrower vacuum advanced distributor. I will check out the Jegs unit though, if I find the distributor is the likely culprit. Thanks for the info.