76 340 duster overheating at idle

That is a heat soak issue. Different from simply 'running hot'. Resolving that problem is a good bit different.
Any idea on the causes or solutions? A couple months back I drove to the store, stopped and got gas, drove a minute down the road and hit a stop light. Took off then the engine died and took a couple minutes to start back up. I figured it was from the cold gas going into the hot engine. I have an edelbrock avs carb