Hi
I would hook up a small tank of diesel as close to the lift pump as i could.Add a fuel pressure gauge and try it again.You could have a line were the inside is collapsing and plugging the fuel flow,either before the lift pump or after.
A fuel treasure gauge will help you see if the lift pump is making pressure when the truck stalls.
I have had a rubber line falling apart inside and the bits of rubber would pile up and form a plug either in a fitting or elbow and act just like what you are describing.Wasted a lot of time and filters finding that one.
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews