Hi Slam

I have done several S-10 conversions where a fuel pump was mounted in the tank. You will need to install a pressure regulator and set it to about 7 psi, and in addition to that, you will have to be able to have a small continuous flow of fuel back to the tank via the return line so that the fuel pump doesn’t stall. Good luck.

Best thing to do is drop the tank, remove the fuel pump, install a fuel line in place of the fuel pump to reach within 1/4-1/2 inch from the bottom, install an external fuel filter, then an electric fuel pump mounted close to the tank towards the rear of the truck. In an S-10 you can install the pump just ahead of the rear wheel well and in the case of a Jimmy, it has to go behind the wheel well. The reason for mounting it at the rear is because electric fuel pumps do not suck well, but they push great. Thus, if you have it mounted up front, it will not deliver the fuel under hard acceleration times.

If you are planing on running 300 hp plus, I recommend you use Speed Pro part #P4694 which free flows 72 g.p.h. and delivers 7 psi and is good for the 300-400 hp range. For an extra 50% of that cost you can buy Speed Pro pump #P4600HP. It flows 100 gph free flow and puts out 6-8 psi and is good for 500-600 hp. These pumps are by far the quietest pumps especially when compared to Holley pumps, plus they cost less. In either case no regulator is required.