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**tejohnson** · 08-25-2006, 01:28 AM

Maybe if you are going with a fuel cell. Otherwise, you have an in-tank pump, correct?

**prophiseer** · 08-25-2006, 02:40 AM

I bet ya do

As far as in-tank pumps go, this is your best bet:
in-tank pump

she requires a little bit of wire swapping and splicing, but works great. Installation in the OBDII pump assembly vehicles is a bit tricky, but it can be done with some careful work. Price ain't all that bad compared to other internal / external pumps on the market, either.

pump flow is rated 67gph with max psi rating of 90.

this pump is a direct replacement for anyone with a late 80's early 90's F-body, too - harness and all

**tejohnson** · 08-25-2006, 08:53 AM

Depending on the vehicle you have, it may have a line coming off the pump to a venturi pump in the bottom of the fuel assembly. If you don't supply that line with pressure, you will have issues. I think I remember you had a 3100, but I can't for the life of me remember what vehicle you have...

**Identity Crisis** · 08-25-2006, 05:48 PM

My car is a cavalier.

engine is being built.
3.1L Block
3400 heads
3.5L Intake
4.3L TB
hypereutectic .40 over Pistons
hayes rings and Bearings
High Vol/Pres Oil Pump
CraneCam 272
Comp Cams LS6 Valve Springs
Comp Cams Roller Rockers 1.6 Ratio
Comp Lifters
Comp Cams retainers and locks
MSD DIS-4
MSD DIS Interface Blocks
MSD Coils
MSD Wires
NGK Iridium Plugs 2 ranges colder
19# Accel Injectors
T4 Garret Turbo
Venom N20 System 125HP w/
Heater, Blow Down Tube, remote Opener

I hope this gives you an idea of what I have in mind. So you can see I need more FUEL.

**AaronGTR** · 08-25-2006, 06:30 PM

The walbro intake pump is also a good choice. Flows 255lph (or 67gph so about the same).

**tejohnson** · 08-25-2006, 06:41 PM

Originally posted by Identity Crisis

My car is a cavalier.

engine is being built.
3.1L Block
3400 heads
3.5L Intake
4.3L TB
hypereutectic .40 over Pistons
hayes rings and Bearings
High Vol/Pres Oil Pump
CraneCam 272
Comp Cams LS6 Valve Springs
Comp Cams Roller Rockers 1.6 Ratio
Comp Lifters
Comp Cams retainers and locks
MSD DIS-4
MSD DIS Interface Blocks
MSD Coils
MSD Wires
NGK Iridium Plugs 2 ranges colder
19# Accel Injectors
T4 Garret Turbo
Venom N20 System 125HP w/
Heater, Blow Down Tube, remote Opener

I hope this gives you an idea of what I have in mind. So you can see I need more FUEL.

That's cool, but not why I asked... lol I want to know what exact body style and year of the car for more info on the gas tank and fuel pump assembly

Because.... If the pump assembly has a venturi, then you should get the 3800 specific walbro kit from ZZP, otherwise, any other in-tank pump with 12ga line will work

**Identity Crisis** · 08-26-2006, 09:16 PM

I have two tanks.

A 1992 and A 1994

**tejohnson** · 08-27-2006, 01:03 AM

D'oh! Too old for my service manual. Have you pulled the fuel addambly outta them yet? If so, is there a plastic line going from the pump to the bottom of the assembly?

**Identity Crisis** · 08-27-2006, 07:49 PM

Nope have yet to pull the sending units.

I will do it this week.

**3.5MGB** · 10-14-2007, 02:12 PM

Feul pump upgrade, no stock unit, fuel cell usage

I'm looking for suggestions for my 3.5l that will be SC in the next year or two. My car will have a fuel cell so we are talking an external fuel pump. Will the one listed earlier in the thread be a good one to begin looking at?

Any other suggestions?