I have a 75 Dart /6 and I'm out of ideas on the carb. About 60% of the time there is a giant hole in the off idle, and mid range power. It will just stagnate, the push the pedal 3/4 down, and the the power comes back. The carb has been rebuilt, but the problem I think is most of the emissions equipment is not working. 75 was the first year for a cat converter, and there all kinds of things under the hood that can't be found new anymore. So, I was thinking of trying a carb from an earlier year that isn't dependent on all that stuff to work correctly. Any ideas on a good range of years to search for?
Thanks