5.3 into and 86 4x4 C10

[dothedew]

The aftermarket tank switching valve isn't strong enough to switch while running.

Dead heading the pumps for a little bit doesn't hurt anything. I did this swap for a friend of mine and he's been daily driving it since
I finished it. One of the walbro pumps failed shortly after he got it, but other than that, no issues. He drives it about 60 miles a day.

How long has he been driving the truck since the swap? I've been trying to locate an aftermarket switching valve, and the ones I have found are only rated to 60-65psi or so. If the FPR is located downstream of the switching valve, I would think the valve would see higher pressures than 58psi (pump side of the FPR). Has he had any leaks or anything of the sort? Is his set up this was, or differently?

[Kansas T]

I used the Pollak switching valve that's rated to 65psi. Since the fuel pressure regulator is on the return side of the fuel rail the pressure should never be over 60 anywhere in the system. No leaks in the system, but the drivers side fuel pump came loose the other day. The bracket I made to hang the pump broke free from the sending unit. It was a quick fix to make a new bracket, but next time I'll probably use the tbi style fuel senders.