4x4k20
1/2 ton status
i have a 79 k20 that i need to put an electric fuel pump on it has dual tanks there is a return line on the old mech. fuel pumpl.. what all do i need to do to put on the electric pump
well, I put mine in front of the switching valve, so I only needed 1 pump, but it was an expensive pump, those el-cheapo's probably won't be able to pull that far.
it's only a matter of time before any pump will fail. The pump I am running is a high quality pump, and the place I got it said they have seen people install those pumps in the engine compartments without problem, and mine is only pulling through about 2' of hose.Electric pumps are made to push fuel, it's only a matter of time before yours fails if you're making it do a job it was never intended to do (pull/suck fuel).
I ran a high quality pump at least I think it is, it's a Blue Holley electrical pump with a regulator. I had problems with it mounted in the engine compartment. At extreme angles it would stop/stall pushing fuel to the carb. Had a hell of a time getting it out of the woods.
I called Holley the next business da and was told to mount it as low as possible next to the gas tank and the regulator mount it as close to the carb as possible.
Good Luck.

I had problems with it mounted in the engine compartment. At extreme angles it would stop/stall pushing fuel to the carb. Had a hell of a time getting it out of the woods.
Anyway, as long as the pump is mounted low and near the tanks, it shouldn't be a problem. I think you could get away with putting it after the valve as long as it's still low in the frame.hey thanks for the info i was just talking to a old hotrodder today he told me to run the just about the same setup as you have he said just be sure to and wire it up to where it gets a good ground and 12 volts at all times and keep it close to and low near the fuel tanks.. so i will let everyone knows how it works out...I have a cheap carter electric mounted to my frame just in front of the tank switching valve. It has been there for 12 years and has never let me down, or starved the carb of fuel. I wheel this truck in socal so off camber, nose high situations are common. It is a self regulated pump and since I have an AFB style carb i just blocked off the fuel return line. That pump is still made and fits really well inside the frame channel. Wired mine up with a fuel pump relay kit from painless.
pump:
http://store.summitracing.com/partdetail.asp?autofilter=1&part=CRT-P4070&N=700+115&autoview=sku
wiring:
http://store.summitracing.com/partd...&part=PRF-50102&N=700+310774+115&autoview=sku
well guys the electric fuel pump worked out well but after all i have done swapping in this engine that needed this fuel setup well it just spun a rod bearinghey thanks for the info i was just talking to a old hotrodder today he told me to run the just about the same setup as you have he said just be sure to and wire it up to where it gets a good ground and 12 volts at all times and keep it close to and low near the fuel tanks.. so i will let everyone knows how it works out...
