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View Full Version : 97 Firebird 3.8L (What fuel pump?)



LT1
06-28-2009, 08:27 PM
My stock fuel pump finally stop working. i was looking at Racetronix fuel pump but not sure if that pump is ok for a stock 97 Firebird 3.8L If the Racetronix is fine which of there pump do i get and do i have to do any modification to run that pump?

The dealer asking $400 for the whole module. I dont want to pay that much.

Travis@gvperformance
06-28-2009, 11:02 PM
the walbro 255lph pump works perfectly with our 3.8 cars.

tkoforpresident
06-29-2009, 04:22 AM
nah dont' pay that much for a stock pump. get the walbro like travis is saying. you'll be upgrading your pump and for much cheaper too.

LT1
06-29-2009, 09:04 AM
sweet, thanks. So if i order from Racetronix do i get the one for the LT1 since they dont list V6 pump? and should i be upgrading the wiring harness to run more voltage?

freakv6
06-29-2009, 09:11 AM
Yea get the one for the LT1. I would probably go with Racetronix as well, I've had a bit of trouble of of the walbros in the past. You don't absolutely need the upgraded harness, but if you have the extra coin i would go ahead with it.

Travis@gvperformance
07-01-2009, 10:10 AM
Yea get the one for the LT1. I would probably go with Racetronix as well, I've had a bit of trouble of of the walbros in the past. You don't absolutely need the upgraded harness, but if you have the extra coin i would go ahead with it.

you do realize the racetronix kits uses a walbro fuel pump right? :slap:

What kind of issues have you had? Only people that have had issues with them are ones that run them dry or contaminate them during install. Otherwise walbro pumps are the most popular in the fbody community with big HP v8 guys running dual walbro pumps

freakv6
07-01-2009, 10:32 AM
I wasn't aware of that, but had heard good things about the racetronix kit over the walbro replacements (especially in the gp world) as far as my problem with walbro...ive had 3 failures. The first one i personally installed and 3 weeks later i lost fuel pressure. the second arrived DOA, and the third didn't last a couple months. This was with not letting the tank go below 1/8 tank, and getting a shop to install the 3rd to make sure i wasnt doing anything wrong.

LT1
07-01-2009, 01:06 PM
freakV6 did you find out what was causing the pump to go out soon? Has the 3rd pump install been successful?

freakv6
07-01-2009, 01:17 PM
the third pump was installed, and it stopped working after a couple months. since that we moved on to a different pump.

Travis@gvperformance
07-01-2009, 02:02 PM
the third pump was installed, and it stopped working after a couple months. since that we moved on to a different pump.

did you drain your tank out when you installed the first one?

freakv6
07-01-2009, 02:24 PM
tank was near empty before it was installed, but put about 10 gallons in before it was fired up.

LT1
07-06-2009, 11:53 PM
I ended up going with Racetronix walbro 255. I started to cut trap door method today, so that I could gain access to the fuel pump easier. ill take some pic's if anyone is interested.

freakv6
07-07-2009, 08:54 AM
Please do, and maybe some measurements if you could.

LT1
07-08-2009, 12:39 AM
Alright, ill start posting pictures as i progress on the install. The measurements i used are off this website.

http://www.geocities.com/formulapower2/fuelpump.html

LT1
07-12-2009, 09:11 PM
Used these measurements

http://i115.photobucket.com/albums/n291/GMHTP/Web/measurement.jpg

Heres what i did so far, cut the trap door

http://i115.photobucket.com/albums/n291/GMHTP/Web/HPIM0944.jpg

LT1
07-12-2009, 09:14 PM
Here i drilled the holes and smoothed sharp edges then painted around the trap door before pulling the pump out.

http://i115.photobucket.com/albums/n291/GMHTP/Web/HPIM0959.jpg

LT1
07-28-2009, 06:15 PM
Replaced the stock pump with the walbro 255

http://i115.photobucket.com/albums/n291/GMHTP/Web/HPIM0982.jpg
http://i115.photobucket.com/albums/n291/GMHTP/Web/HPIM0983.jpg

Dropped pump in added sealant around the edges

http://i115.photobucket.com/albums/n291/GMHTP/Web/HPIM0984.jpg

Bolted everything up

http://i115.photobucket.com/albums/n291/GMHTP/Web/HPIM0988.jpg

Travis@gvperformance
07-28-2009, 06:16 PM
ah yes, I remember those days. Fun times in the hatch area indeed

jnxv6
09-06-2009, 03:14 AM
What is the part number for the Walbro pump? Can it be used in a 94 3.4?

LT1
03-24-2010, 02:04 AM
Yes im sure it can be used on the 3.4L, i dont see why not.

This is where i got the pump
http://www.thunderracing.com/catalog/?action=vshop&vid=4&pcid=165

Fireproof13
03-24-2010, 03:34 AM
I have a racetronix fuel pump and it added power and gas mileage...I really like it.

bob8703
03-24-2010, 07:34 AM
i like this, i wanted to do this mod but never knew there was a right up. the link no longer works you dont happed to have the measurements still do you?

Travis@gvperformance
03-24-2010, 08:48 AM
I have a racetronix fuel pump and it added power and gas mileage...I really like it.

adding a fuel pump doesn't add power or gas mileage unless you had no fuel psi before and were starving the engine or a fuel filter clogged and changed that at the same time. Otherwise the pcm controls the injectors and your fuel pressure regulator controls the pressure at the rail. Not the pump.

bob8703
03-25-2010, 02:42 PM
i guess no one had the specs for this : (

freakv6
03-25-2010, 02:59 PM
http://www.worldisround.com/articles/12533/photo14.html

or

http://www.ls1tech.com/forums/lt1-lt4-modifications/1256372-fuel-pump-trap-door-mod-pics.html

Fireproof13
03-25-2010, 03:47 PM
Okay well when I bought the car it had a weak fuel pump, so I guess that made the difference

LT1
03-26-2010, 05:39 AM
Thanks FreakV6 for the links.

Don't know what happen to the other website, they had a really good write-up.

jnxv6
03-29-2010, 04:41 AM
http://www.worldisround.com/articles/12533/photo14.html

or

http://www.ls1tech.com/forums/lt1-lt4-modifications/1256372-fuel-pump-trap-door-mod-pics.html

Thanks for those links, they are really helpful. :dood:

bob8703
03-29-2010, 07:34 AM
http://www.worldisround.com/articles/12533/photo14.html

or

http://www.ls1tech.com/forums/lt1-lt4-modifications/1256372-fuel-pump-trap-door-mod-pics.html

awsome thanks freak!

scream97
03-29-2010, 08:58 PM
does anyone havepicks of how they took the basket appart

Travis@gvperformance
03-29-2010, 09:34 PM
its two pieces, just break the seal and it will be apart. No biggy.

phoenix_rising
03-31-2010, 09:11 PM
IMO most people with a V6 are running Walbro pumps with success. But I know there are many other quality units out there to try as well. Just make sure you do the fuel pump hatch while you are in there.

jnxv6
04-05-2010, 02:32 AM
IMO most people with a V6 are running Walbro pumps with success. But I know there are many other quality units out there to try as well. Just make sure you do the fuel pump hatch while you are in there.


Does anyone have specific part numbers for the Walbro pumps?

LT1
05-08-2010, 03:51 AM
You can get the same part number as the walbro 255 for LT1, they will work.