440 wont idle in gear or where it should, in park.

Hey gents. I have a stock mid 70's year 440 in my Dart. It won't idle while in, park, in the rpm range it should. When i DO get it idling close to right, it surges lightly and it dies when i put it in to gear....also bogs when turning corners. The idle raises when the car is rolling down the road, and it falls on its face and backfires when i shove my foot in it. It has a Eddy 750 carb on it(:-(). I did the 'ol carb cleaner trick around the intake and base of the carb...no leaks there. I havent tried sucking on the vacuum advance line yet. Its just running very inconsistent, but when its right it runs like a fast grunting boar! any help would be GREATLY appreciated! I wanna get to really driving this thing dangit!!!
Matt