55.2-59 Not getting fuel from Holley external pump, help gents!

[daveshilling]

Hey fellas,

I have a 59 GMC parked out on the street and I need to move it to the driveway today or else the city is going to move it elsewhere.

The 270 runs and ran when I got it. I cleaned up some of the patchwork wiring and replaced the gunked up gas tank. It was running on crappy, confusing wiring and bad gas.

After scrambling to reassemble the wiring, I get no fuel from the pump, even when i manually put the positive directly to the battery. It has pumped a small amount of fuel, then stopped. The previous owner installed a second tank with a 3 way valve, and I have it switched to the in-cab tank (no matter where i switch this valve... no fuel)

I've removed the inline fuel filter in the line leading to the carb, pointed the fuel line into a coffee can, and put the fuel pump line on positive battery. The pump runs, and it has spit out a bit of fuel, but it then sounds starved and no fuel comes out.

Dumping fuel down the carb gets me running briefly, so this is the last puzzle piece.


First stupid question.. how much gas needs to be in the tank? I put in a few gallons, but I don't know how much needs to be in there to reach the inlet tube.

Second question: Where should the positive line of the fuel pump be wired to? It was connected to the bottom of the resistor when I got the truck and it was running, but that doesn't seem right.

Any other insight is helpful! I have until 830am tomorrow to get this bad boy on the driveway. The driveway is inclined, there is no pushing this truck.