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aeromotive 340 or not?

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Old 07-20-2012, 08:49 PM
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Originally Posted by dirtdiggler02
Can they be run with the tank low on fuel? (1/8-1/4 tank)
I wonder somemthing about low gas 1/4 to e will pump stop?
Old 07-20-2012, 09:20 PM
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I run 1 340 return style with 39.5 psi fuel pressure and 85 lb Injector dynamics injectors running at 75% duty cycle on a 6.0 with worked over L 92 heads 625 lift cam and a 2.9 whipple I have had no issues or pressure problems
Old 07-20-2012, 10:28 PM
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2 aero 340, return style here, with no problems
Old 07-23-2012, 05:22 PM
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My 340 died after a few months, but it may have been because it was pumping E85.

Interesting read here: Fore Innovations: 340LPH Fuel Pumps for $19.50...yes, really!
Old 07-23-2012, 05:27 PM
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Originally Posted by chevyboy.520
I'm running an aero 340 center inlet. My truck is still return less, and I'm pushing 14psi and 75# injectors. Seems good for now. But I'm going to return style and a aero fuel regulator and a second aero 340.
I have no idling issue with this pump.
Only problem I have is when it's 103+ degrees out, my truck vapor locks. But I think it's just from the turbo heating everything up under the hood. When it's cool out my truck runs flawlessly!
My cousins truck just started doing the same thing when its hot out and he is running a aero 340 too....
Old 07-23-2012, 06:20 PM
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What wireing kit would you need? O4 returnless, thanks
Old 07-23-2012, 06:34 PM
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Originally Posted by Camaro Zach
I have been running one since they first came out and haven't had a problem at all. IMO the inlet location doesn't matter on our trucks. They DO have a check valve just like any other nice replacement pump and has no extended cranking problems.
Does everyone with a 340 have a check valve? I was told they didn't. If they do I must have leak somewhere.
Old 07-24-2012, 12:32 PM
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Both of mine have checkvalves. Sometimes if you pull the rubber cap off too hard it can pull the checkvalve out with it. Best thing to do is slice the cap to take it off.

Could also have a counterfeit pump, factory defect, faulty checkvalve, etc...
Old 07-24-2012, 03:56 PM
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Guess I need to pull it and and check everything out.
Old 07-25-2012, 01:19 AM
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Originally Posted by Not a Clone SS
What wireing kit would you need? O4 returnless, thanks
Correct me if I'm wrong, but I believe this is the correct wiring harness.

Racetronix - Fuel Pump Wiring Kit MP150/280, Walbro - Kit Configuration Page

EDIT: I emailed them and asked about the kits. I believe the difference between the link I posted, and the link in the first post, is the first link is longer for some truck applications. I'll let you guys know what I hear.

Last edited by iregret; 07-25-2012 at 01:29 AM.


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