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Looking for fuel pump suggestions

Moparlike

Moparlike

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Hey.
I have a 69 Road Runner, 440-6, bored and stroked to 506; dynoed at 693. Four speed.
I am looking for electric fuel suggestions to purchase.
Hoping for dependability and volume.
Also, I have a friend who runs both electric AND a mechanical fuel pump simultaneously. Is this generally recommended?
Also, what fuel pressure is normal to run?
Thanks for your help!!!
 
Still carbed? I guess a Holley blue would work with a regulator. I'd go in tank pump and then you can go with a Walhbro 255.
 
Electric pump can't push through mechanical pump, diaphram stops fuel from passing through. Only advantage is that fuel is at mechanical pump sooner than when cranking after a long shut down.
 
Nice motor!!! I would ditch the mechanical to alleviate any heat soak and a pusher pump will run cooler and more consistent. Are you running a fuel cell? In tank pump would be my suggestion if you have the funds. I have a measly Holley Black with regulator and it is noisy as F#$%. I am considering a return style regulator to minimize regulator hammering.

5 to 7 psi is plenty. You need good volume though to keep up with that beast.
 
you really don't want to run a mechanical pump on a 700HP Engine, wondering what size carburetor are you wanting to run and is your car for street/strip or just street, also your mite want to up grade to a 1/2 fuel line while your at it, be smart and do the complete up grade just my opinion.
 
I'd go electric with a return style regulator, doing this minimizes heat issues with the fuel.
 
Moparlike said:
Thanks guys.
I currently have the 6 bbl setup. Three Holly 2bbls.
I appreciate it!!!
Click to expand...
IMO Electric pump fore sure, also complete fuel system up grade, I forgot where I bought mine but I did have a 1/2 factory style sending unit for the stock tank.
 
Put the pump on its own dedicated circuit, fused and relayed. Don't piggy back it onto another circuit. If you don't have enough current going to it, because its tapped in with other stuff, you will burn the pump out from lack of voltage. I found that one out the hard way many years ago.
 
I run the Holley black pump on my 493 and its worked good for me. There is a good selection out there depending on what you want. In tank pumps are great but with my cars being all carbs I just run my Holley pump right next to the fuel tank so its pushing the fuel. Right now I run a deadhead regulator and it works fine for me but a return line system is the best way to go as I think I may go to that setup later myself. Ron
 
I have a six pack setup on a stroked 440 also. I was having all kinds of problems after the build. Went to an electric Mr. Gasket pump pushing about 7 psi and haven’t had a problem since. Have the return line like 747mopar recommended above and life is good.
 
tonysrt said:
Electric pump can't push through mechanical pump, diaphram stops fuel from passing through. Only advantage is that fuel is at mechanical pump sooner than when cranking after a long shut down.
Click to expand...
I do not think this is true.
Usually folks that use both use the electric to prime the carbs before starting after a car has sat. For example a Hemi car. Prevents excessive cranking for the first start.
Know several folks who mod cars this way. Mechanical is kept because these are OEM type cars.
 
I have a Holley blue pump ,no return line ,,works ,just noisy, ,I have it mounted under rear end hump , at tank ,,,,I don't like how loud it is ,,,,,,I'm looking for nother way this holly sucks
 
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