Wanted: QUIET 12V electric fuel pump for carb'd 350HO Deluxe - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-21-2009, 09:37 PM
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Wanted: QUIET 12V electric fuel pump for carb'd 350HO Deluxe

I was hoping to just run a mechanical fuel pump on the 350HO Deluxe crate engine in my '38 Dodge coupe. It's been a while since I ordered up the parts but tonight when installing it I realized that there just isn't enough clearance between my pump and the motor mount to fit the 6AN fitting and lines that feed the 4 barrel Holley carb.

So now I must consider going to an electric fuel pump. I have a "through the trunk" mounted RCI tank from summit (fittings on the top). What is the quietest pump I can find to supply fuel?

I generally dislike electric pumps because of the noise they create. The one exception I have found is a low pressure "inline" Carter 6V unit I installed in my '29 Model A but that is a whole different application.

Thanks for any advice you can offer.

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Old 12-21-2009, 11:51 PM
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I would go to a Edelbrock mechanical fuel pump and then buy the optional bottom plate ( Edelbrock # 1797 )
Then run the 6AN fittings out of the bottom of the pump.



#1797 is about 25 dollars at the sped shop I buy from
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Old 12-22-2009, 02:46 AM
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I have an Edelbrock mech pump and itīs clockable.
I rotated the inlet/outlet to clear my chassis.

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Old 12-22-2009, 07:00 AM
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May be outside of your budget, but there's THIS style pump that allows more room in most cases.

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Old 12-22-2009, 07:48 AM
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Thanks guys - some good alternatives. Maybe there is hope
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Old 12-22-2009, 09:54 AM
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I have a Carter 7 psi high perfornance fuel pump inside the trunk of my chevelle and I do not hear the pump running at all. It's completely sealed pump and does not leak.
http://www.jegs.com/webapp/wcs/store...-1&showValue=1
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Old 12-22-2009, 10:05 AM
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Quote:
Originally Posted by 38Dodgebiz
What is the quietest pump I can find to supply fuel?

I generally dislike electric pumps because of the noise they create.
While one pump might make more noise than another, it's mainly the method used to mount it that will make or break it, noise-wise.

Rubber mounting/insulators/isolators will make most any pump quiet enough to easily tolerate. Just remember to use a relay, good ground, and keep it away from exhaust heat and road debris. All this while keeping the pump low and as close to the tank/fuel cell as possible. Fun!

Gerotor pumps need good filtration before the pump, impeller types are less susceptible but it wouldn't hurt to use a filter, anyway. Then another at the carb/fuel rail.

If the pump is plumbed w/a return line, it'll be quieter and might even last longer than a pump run against a dead head.

Last edited by cobalt327; 12-22-2009 at 03:08 PM.
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Old 12-22-2009, 10:11 AM
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Carter also uses rubber mounting insulators, too.
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Old 12-25-2009, 10:58 PM
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The GM hi-perf mechanical pump is also re-clockable.
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Old 12-26-2009, 09:29 PM
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Quote:
Originally Posted by lg1969
I have a Carter 7 psi high perfornance fuel pump inside the trunk of my chevelle and I do not hear the pump running at all. It's completely sealed pump and does not leak.
http://www.jegs.com/webapp/wcs/store...-1&showValue=1
That's a good pump - I have it in my Vette. Way better than the holley pump I had before. I also had that Carter pump in my pickup.
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Old 12-27-2009, 12:09 AM
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Check out Summit for the Carter P4594 it will be the most quiet,however the mounting is what makes a big difference,I have seen several posts where guys have used the straps from universal tailpipe hangers for a rubber mount pad and were very happy with the results.
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Old 12-27-2009, 06:27 AM
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Even the Carter mechanical pump can be clocked around some. This is a Ford, but the pump base has been rotated, I believe, 2 holes for -6 fittings:



And this one is before final plumbing with chassis hard line instead of flex and body installation.



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Old 01-01-2010, 10:54 AM
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I agree with the Carter recommendation, they use a mounting system that makes them very quiet, but it's not just the mount. I've made similar mounts for Holley pumps and they still aren't nearly as quiet as the Carters,
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