Rebuild Runs Rough

67dartgtgo said
I had a bad distributor reluctor once that was giving me fits at low rpm....surging until it came up and stabilized the reluctor on the shaft. At idle it was moving on the shaft just enough to cause a surge due to a ill fitting roll pin. Not sure if this is related to what you've got but you never know. Sounds like have a little bit going on there.

Distributor is completely stripped of components. I use a crank trigger instead of a reluctor in the distributor. Although this brings up a good concern I had. The trigger wheel was not 100% concentric when turning the crank over to set the pickup gap. I will investigate into this more. Thanks

Dana67Dart said
was the efi and cam etc all the same as before the rebuild?

Is it possible you are too lean?

vacuum leak?

what you are describing sound just like my 150000 mile ago rebuilt 273 , 1 cyl is in the 110 range and one is in the 120 range and the rest are in between. I leaned out the carb thinking now that I'm at 5000 feet (was a sea level car) I would need to do that. at 2500 rpm it seems to be misfiring and 2500 rpm, Hydrocarbons are 1000 greater than they were before the jet change. with less advance it seems to behave better but not great. drivability is not effected that I can tell.

Lean is possible. Would mean my afr gauge is out of cal. (However, I am running E85 and using a gas gauge, maybe I can borrow/buy a lambda) But that’s certainly possible. I will see if I can make it run smoothly by playing with fuel. I will also disconnect and plug all vacuum lines to see if it acts better. I must think of a good way to check for intake-head gasket leaks.