Make sure it's not something stupid like the igntion coil, My Friend's 340 in his cuda was doing the same things & I swapped a new coil in & it did fix it. (much cheaper than a carb also) LOL.
Hello Pat, I knew this would come up, but by swapping out the little Eddie carb on my convertible she runs like a top, putting the original rebuilt AVS back on and she`s contrary again.