Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

Which intank pump?

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Old Apr 12, 2021 | 06:58 AM
  #1  
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From: LONDON, KY
Car: Camaro
Engine: Carbed L98
Transmission: TH350
Axle/Gears: 3.73
Which intank pump?

I got my Holley 750 Street HP carb rebuilt and installed only to find out I have no fuel pressure. At least not enough to keep the fuel bowls full.
I took the feed line off of the regulator that goes straight to the tank. I blew compressed air to the tank. I could hear it at the tank. The pump is kicking on but may be leaking at the intank hose. Could be factory fuel filter or sock.

It was originally TPI but I converted to carb. I am still running the TPI pump with a Mallory 4309 FPR with stock supply and return line.
If I have to replace the pump, I was thinking of going to a TBI fuel pump. That would be less fuel to return to the tank with the small return line.
What brand TBI pump would be best/reliable?

Denso
ACDELCO
Delphi
Other?

Last edited by bluegrassz; Apr 12, 2021 at 07:25 AM.
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Old Apr 12, 2021 | 06:42 PM
  #2  
NoEmissions84TA's Avatar
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From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Which intank pump?

Start here:
https://www.thirdgen.org/carbswap/
https://www.thirdgen.org/tbi-afpr/
https://www.thirdgen.org/pickacarb/
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Old Apr 13, 2021 | 07:05 AM
  #3  
bluegrassz's Avatar
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From: LONDON, KY
Car: Camaro
Engine: Carbed L98
Transmission: TH350
Axle/Gears: 3.73
Re: Which intank pump?

Ok so maybe my original post wasn't clear.
I have been converted to carb since 2006. My setup has ran fine. I have read the stickies a time or two since I have been here since 2002. But thanks for the help.

So I will try to rephrase my question.

"What TBI fuel pump brand is dependable and not loud?"

Manufactures have changed over the years and I was just looking for a quality pump with lower psi than the factory TPI pump. Not looking to have to drop the tank again in 3-6 months because of a crappy pump that Autozone / Advance carried failed.
I dont need a Walbro 255 or Aeromotive 340. The carb just doesnt need that kind of pressure and no need to install a larger return line.
A TBI pump with 17- 20's PSI (or somewhere close) should suffice and not tax the return.

So what brand has everyone had luck with plus is not loud like some brands/style?

Ac Delco EP 386 ?
Delphi FE0115 ?

Last edited by bluegrassz; Apr 13, 2021 at 07:52 AM.
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Old Jun 3, 2021 | 03:22 PM
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From: Hawaii
Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
Re: Which intank pump?

Originally Posted by bluegrassz
Ok so maybe my original post wasn't clear.
I have been converted to carb since 2006. My setup has ran fine. I have read the stickies a time or two since I have been here since 2002. But thanks for the help.

So I will try to rephrase my question.

"What TBI fuel pump brand is dependable and not loud?"

Manufactures have changed over the years and I was just looking for a quality pump with lower psi than the factory TPI pump. Not looking to have to drop the tank again in 3-6 months because of a crappy pump that Autozone / Advance carried failed.
I dont need a Walbro 255 or Aeromotive 340. The carb just doesnt need that kind of pressure and no need to install a larger return line.
A TBI pump with 17- 20's PSI (or somewhere close) should suffice and not tax the return.

So what brand has everyone had luck with plus is not loud like some brands/style?

Ac Delco EP 386 ?
Delphi FE0115 ?

I put a Delphi pump in my TBI S- 10 and its quiet and had NO problems at all! for 7 years


A shop replaced my TPI car with a NAPA branded pump a couple weeks ago and I am now getting weird noises and issues so I have to take it back....


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