83 ford bronco with motorcraft 2bbl carb 351engine. I am having problems with it dying when driving.?

The problem is when there is a load on the engine. When it is in park i can rev it up with no sputtering. When i am driving in a straight line it will be fine sometime and some times not, and will just die on me. Now here is the weird thing. When i make a right hand turn it will die every time. This is noe a coincidence because i tried it several time and tried left hand turns and it does not die. After it dies sometime it will start right back up and sometime it will have to sit for a while. What could the problem be. thanks in advance for the info.