I am sure this has been discussed before, but what would be a good electric fuel pump for a mild 340 with a Holley Avenger 670?

It's in a Duster with a 4 speed and 3.91 rear gears.

Thanks!

post all you want bro. I think carter has a street pump but wait for the guys that know for sure. In my exp some pumps put out more than they say plus alot of of fuel psi gauges ain't dead on accurate. Sumpin to keep in mind if you have a flooding/high fuel level situation on down the line. Me I like a bypass line back to the tank with a Holley low psi reg regulating a return line T'd close to the carb inlet rather than regulating the fuel TO the carb inlet. keeps the fuel cooler too

The Carter pump that can be used without without a regulater is a good pump

Carter's P4070 Street Pump is the one.

Available at a speed shop or discount catalog near you.

R.

I had a high pressure Mechanical Hemi race pump on my '64 Polara and it made too much pressure for a street car. It really was a NASCAR pump (they don't allow electrics) and again another lesson learned. With today's fuels an electric pump with a reasonable output is needed to combat vapor lock. It is a delicate balancing act. The Carter would be a good choice or a Holley pump with a return line.

How do I run a return line if the tank isn't set up for it?

You might be able to just buy a new sending unit that has a provision for a return built into it.

Is there another way? I just bought a new sending unit. I can't send it back. It's been too long.

Also, is it a quiet pump?

Good choice, don't need anything larger if you must go electric.

A person can pull the sender & drill a hole in the circular flat & solder in a nipple

Thanks for the replies. I haven't installed the tank (I bought a new one) or the sender yet. Is it possible to install a nipple on the filler tube, or is that not a good location?

Yes! I finally got rid of that problem, running terribly for the first couple minutes after a heat soak start, by switching to that Carter electric pump.

I have a Mallory 140 with the regulator. I have a 383.
I put the pump right in front of the tank between the tank and the differential. It is mounted on the rail near the tank with a piece of rubber between the bracket and the rail. (rubber was cut from an exhaust hanger from Autozone). I put the bracket as low as I could go. I used some small metal brackets I found at the hardware store to extend the pump lower. The pump bottom is about level with the bottom of the tank.

I also have a in-line fuel filter (Holley 100 micron) before the pump and a regular 40 micron filter before the regulator. The regulator is mounted in front of the carb with a bracket from AED.

The Mallory is quiet and the rubber helps absorb any vibration. The only issue with the Mallory is the metal threads are really delicate.
I had to send my first pump back. The aluminum is real soft and the threads are not made well. I had a leak the first time. I found the threads falling apart on the first pump. The second one was fine and does not leak.

mine is a dead head setup. I do not have a return line. It does fine and I have had no issues with vapor lock or any issues with pump overheating.
I do have the larger fuel lines and a 3/8th style fuel sender I got from Dixie parts. It has the return line nipple. I capped it off for now. I may add the return line in someday but for now it works great.
Dixie parts fit great and it was easy to do. No leaks.

I also added a oil pressure switch and relay to my fuel pump. that is a must for safety.


Smos

Just been looking at the Summit Racing website. Has anyone ever tried the Carter inline fuel pumps? They look rather interesting

Are you going to put a regulator in the system? I was a little hesitant to do the full blown electrical pump, regulator, relay, oil switch etc. But, once I did the research it made sense and it was not hard. Just have to do your research on wiring etc.

If your going to put in a simple in-line fuel pump you are better off just using the reliable OEM type 6 psi mechanical pump. Works great.

If you are going to an electrical pump. I would make sure it had the right pressure output etc. You don't want to have low fuel pressure at WOT. You could go lean and blow a piston.

I am willing to do the whole system, just don't know what is involved. From what I can see, my biggest hangup will be the return line.

Mallory 140,with regulator (I think they just renamed the 140).
No return line needed. Regulator can be setup as a return line or dead head.

Also, one hint. If you use a liquid filled fuel pressure gauge be advised they can fluctuate with engine compartment temperatures. Set your regulator at 6 to 6.5 psi (holly carb) when cold and don't chase the psi. Mine gauge psi drops when the gauge is hot.

For a carb setup, the return line should not be needed if the electric pump is mounted aft in a cool location. Pressurized fuel from the aft mounted pump will resist vapor lock in the hot engine compartment... or will re-fill the carb bowl for start after heat soak boils out the fuel.

Your Holly should handle up to 7-9 psi fuel pressure. A self regulated pump in the 5-7 psi range, like the Carter street pump, mounted on a frame rail, should be fine without regulator or return line.