I got a 91 f250 with a 460gas starts up and runs for a few min till its warm then dies starts back up but dies again let it cool down it will run for a few min then dies again any ideas how to fix

 

I don't know about ideas, but if we try to understand what and why it is happening, may come up with possible solution.
From the info so far provided, it seems that the engine gets warmed up and the problem appears.
The idea is to attempt to list or figure out what changes when the engine gets warm.
First, the coolant sensor tells the computer it's ready to go into closed loop and with some addl info from the oxygen sensors better fuel control is supposed to be coming up.
The open loop program provides addl fuel to a cold engine. Closed loop controls fuel injection amount for economy and performance. If the computer doesn't get notified there is extra air getting into the engine it thinks it's fuel control strategy is good when it is too lean, but not too lean so as to cause addl fuel to be injected possibly resulting in a stall.
Two things could be happening. One is , a good sized vacuum leak and another could be the incorrect amount of air entering the engine is being supplied to the computer. .For starters , it might be a good idea to look for a vacuum leak and any other way air might be getting into the engine and not being measured so the computer can adjust accordingly.. There are several other possibilities, but these are good points to start checking.