Chris-
I agree- it's definetely a carb issue. The engine idles fine, but I'm just trying to sort out the jetting issues to get it tuned properly because it is running rich and has these stumbles. My reasons for changing the cam are unrelated to the carb issue in that the cam may be just a little too big (244/244 @50 .560/.560) for comfortablly cruising around town, not to mention that it sounds like a pro-stock car at idle
Mike