Truck is a 73 ford f250 with the 360 and a 4 speed manual. Stock carb. The truck has always popped and studdered over 3000 so i figured it had a vacuum leak. I was taking the valve covers off today to repaint them and I think I might have found the problem. I have pictures of what the line looks like. It's still connected to the carb but not the other end and I have no clue where it goes or where to connect it. Help would be appreciated!