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Old 10-17-2009, 04:10 PM
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Electric Fuel Pump

Looking to swap an L-31 Vortec 350 into my '69 C-20. I'll have to run an electric fuel pump. Any suggestions on a good electric pump? Stock fuel sender doesn't have a return line. Is it O.K. to run the electric pump "deadheaded" into the regulator with no return?

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Old 10-18-2009, 06:57 AM
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Dead head will work. A few members have suggested a Carter brand on here that doesn't require a regulator and is cheap. Don't know the Part#. Do a search in the engine section.
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Old 10-18-2009, 07:12 AM
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Thanks, not running a return would save me some work and $$$. I'll search for that Carter pump.
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Old 10-18-2009, 08:13 AM
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If you don't use a return line then try to get the correct pump for your application so you don't have to regulate it down too much.
I dead headed a pump from 41 PSI down to 6 PSI and it was noisy and the output would surge from 4 to 8 PSI. I swapped in a bypass regulator and it will hold 6.5 psi in all RPM ranges.

Im using the stock in the tank electric pump and a Holley regulator.
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Old 10-18-2009, 09:45 AM
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as long as your using the stock regulator you can run whatver youd like as long as its as good as or better then the stock pressure, which should be around 60psi. a stock delco pump would do the trick or if you get something aftermarket like a walbro 100psi pump, that would work fine too.
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Old 10-18-2009, 10:05 AM
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Carter P4594 7 to 8 psi 72GPH free flow.
Carter P4070 6 psi 72 GPH free flow.
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Old 10-18-2009, 10:14 AM
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I guess I should have been more clear, gonna run a carb.
F-Bird, thanks for the part numbers, will look them up.
Edit: Looked up the Carter pumps. Is a 1/4" NPT inlet/outlet going to be big enough to run 3/8" fuel line?
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Old 10-18-2009, 10:28 AM
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Quote:
Originally Posted by Sinister
I guess I should have been more clear, gonna run a carb.
F-Bird, thanks for the part numbers, will look them up.
Edit: Looked up the Carter pumps. Is a 1/4" NPT inlet/outlet going to be big enough to run 3/8" fuel line?
Yes. They take the 1/4" NPT barb fittings or pipe/tube fittings for 3/8" fuel line and hose.
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Old 10-18-2009, 10:30 AM
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Cool, thanks everyone.
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Old 10-28-2011, 09:58 PM
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Quote:
Originally Posted by F-BIRD'88
Carter P4594 7 to 8 psi 72GPH free flow.
Carter P4070 6 psi 72 GPH free flow.
Holley Red 7-8 PSI
Summit wiring kit with relay circuit breaker and wire -$20.00 easy to follow directions. no regulator needed.
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