I have a 1983 F-250 4X4 automatic pickup with the 460 engine.
When I bought it last Feb. I wasn't told that the front tank did not work. So I filled both tanks and when I switched to the front one it died. So after studing the problem I decided it was the in-tank fuel pump. So I bought a new one $60 and when I went to install it, I decided to have the tank boiled out and checked for leaks. The shop called me and told me I needed a new tank as the old one was far to rusty to repair. I got one for $140 and put the new fuel pump in it as well as a new fuel filter and got going again, although the front gage did not work. It was fine for a while but after a couple of months it began to sputter (fuel starved) while driving it. When I switched to the rear tank it did the same. Then it would not run at all. I thought it might be the fuel diverter valve so I bought a new one. $40. That wasn't it so I had the carb. rebuilt.$150 Then it cranked and runs fine on the rear tank. After switching to the front tank it will run a couple of miles and then stalls out. (fuel starved again) I bought and replaced the front fuel pump again.$60 It still did it. So I bought and replaced the fuel selector valve.$150 It still does it. so now everything on the Front side is new. New tank, new fuel pump, new selector valve, new fuel diverter valve. And I've blown air through the fuel lines to make sure they are clear. So after about $600 it still stalls after a few miles on the front tank only. And runs fine on the rear tank.
Any help or suggestions would be appreciated.

 

leak in the line somewhere??

 

If you pop the filler cap off right after it quits, does it suck air? How many miles is a few? Have you tried the fuel systems forum? You'll likely have better luck finding a guru there.