Fuel pump replacement for 91Z.. - ZR-1 Net Registry Forums

Vette73 · 10-13-2018

Doing some research on fuel pump replacement and I see the 96 Chevy suburban fuel pump will work in a 91..

I can research it but, anyone know the correct part # for these? When I order these do they come with everything I need?

Never had a car that used two fuel pumps, or for that matter, had them mounted inside the gas tank......

Only fuel pump I ever changed was on my 73....

I just need to know exactly which parts I need.....

Thnx..

carter200 · 10-13-2018

You may want to replace the “y” that connects the pumps to the feed line while you are there. Do a search on the “y” for more details. The original is plastic and is discontinued. It has a tendency to split from old age and gets brittle. My shop, CT Machining, machines a replacement “Y” out of billet aluminum which will not break nor leak. Contact me if you want to order one. Thanks, Carter

PhillipsLT5 · 10-13-2018

ACDELCO TS1
ACDELCO TS3
ACDELCO G1
AIRTEX E3240
AIRTEX E3240

Vette73 · 10-13-2018

Isn't the part # 25163473 ? I'm guessing I should order 2 of these....

When I Google this part # it seems you can get these almost anywhere including Amazon..

Vette73 · 10-13-2018

Quote:

Originally Posted by PhillipsLT5

ACDELCO TS1
ACDELCO TS3
ACDELCO G1
AIRTEX E3240
AIRTEX E3240

Ok , now I see....Thnx..

TX '90 ZR1 · 10-13-2018

I replaced my fuel pumps a while back. Not difficult compared to most jobs on these cars.
I was experiencing pressure bleed down after shut down. Isolated leak to the fuel sending/pump unit. I replaced the pumps because it appeared the leakage was related to the pump check valves. Come to find out, the plastic "Y" had a small crack in it and was the culprit.
The pumps are available from nearly all of the common sources. Marc Haibeck has a recommendation as to which one to use, so you might check this out. His recommendations on these cars are well documented as being correct.
When re-assembling, be sure and use hose that is designed for submerged applications. There are 2 different hose sizes in the assembly. 5/16" and 3/8". Use good quality stainless clamps and I would highly recommend using the "Y" that Carter supplies.
Here's a pic of what you will be looking at after rebuild.
z062718-09.jpg

A26B · 10-13-2018

Quote:

Originally Posted by Vette73

Doing some research on fuel pump replacement and I see the 96 Chevy suburban fuel pump will work in a 91..

I can research it but, anyone know the correct part # for these? When I order these do they come with everything I need?

Never had a car that used two fuel pumps, or for that matter, had them mounted inside the gas tank......

Only fuel pump I ever changed was on my 73....

I just need to know exactly which parts I need.....

Thnx..

Here you go! Welcome from Jerrys Gaskets

Just click on the following link for info on replacement fuel pumps for the ZR-1.
http://www.jerrysgaskets.com/zr-1-fu...p-replacemets/

Ccmano · 10-13-2018

RockAuto has a whole selection. You don’t need to spend a ton of money on these. I used the Precision Electric pumps. They seem to have a good reputation. Some people feel more comfortable with name brands that cost (a lot) more. But I’ve seen the Airtex and Delphi pumps go out just as easily. To each his own...
H

https://www.rockauto.com/en/catalog/...fuel+pump,6256

geezer · 10-13-2018

To your Question: yes the GM # is 25163473.

Flyman 27 · 10-14-2018

Here are 2 new ones, they include what you need.

https://www.ebay.com/itm/16328352010...84.m1555.l2649

10-13-2018	#1
Vette73 Join Date: Nov 2014 Location: Brooklyn ny Posts: 1,044	Fuel pump replacement for 91Z.. Doing some research on fuel pump replacement and I see the 96 Chevy suburban fuel pump will work in a 91.. I can research it but, anyone know the correct part # for these? When I order these do they come with everything I need? Never had a car that used two fuel pumps, or for that matter, had them mounted inside the gas tank...... Only fuel pump I ever changed was on my 73.... I just need to know exactly which parts I need..... Thnx..

10-13-2018	#2
carter200 Join Date: Jun 2004 Location: Texas Posts: 2,431	Re: Fuel pump replacement for 91Z.. You may want to replace the “y” that connects the pumps to the feed line while you are there. Do a search on the “y” for more details. The original is plastic and is discontinued. It has a tendency to split from old age and gets brittle. My shop, CT Machining, machines a replacement “Y” out of billet aluminum which will not break nor leak. Contact me if you want to order one. Thanks, Carter __________________ 95 ZR-1 BLK/Gry #392 LT5 Reg# 868 RIP ZR1NET Founding Mem #155

10-13-2018	#3
PhillipsLT5 Join Date: Aug 2005 Location: Scottsdale, AZ Posts: 2,450	Re: Fuel pump replacement for 91Z.. ACDELCO TS1 ACDELCO TS3 ACDELCO G1 AIRTEX E3240 AIRTEX E3240

10-13-2018	#4
Vette73 Join Date: Nov 2014 Location: Brooklyn ny Posts: 1,044	Re: Fuel pump replacement for 91Z.. Isn't the part # 25163473 ? I'm guessing I should order 2 of these.... When I Google this part # it seems you can get these almost anywhere including Amazon..

10-13-2018	#6
TX '90 ZR1 Join Date: Oct 2017 Location: TX Posts: 2,050	Re: Fuel pump replacement for 91Z.. I replaced my fuel pumps a while back. Not difficult compared to most jobs on these cars. I was experiencing pressure bleed down after shut down. Isolated leak to the fuel sending/pump unit. I replaced the pumps because it appeared the leakage was related to the pump check valves. Come to find out, the plastic "Y" had a small crack in it and was the culprit. The pumps are available from nearly all of the common sources. Marc Haibeck has a recommendation as to which one to use, so you might check this out. His recommendations on these cars are well documented as being correct. When re-assembling, be sure and use hose that is designed for submerged applications. There are 2 different hose sizes in the assembly. 5/16" and 3/8". Use good quality stainless clamps and I would highly recommend using the "Y" that Carter supplies. Here's a pic of what you will be looking at after rebuild. z062718-09.jpg __________________ Kenny 1990 #442

10-13-2018	#8
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,843	Re: Fuel pump replacement for 91Z.. RockAuto has a whole selection. You don’t need to spend a ton of money on these. I used the Precision Electric pumps. They seem to have a good reputation. Some people feel more comfortable with name brands that cost (a lot) more. But I’ve seen the Airtex and Delphi pumps go out just as easily. To each his own... H https://www.rockauto.com/en/catalog/...fuel+pump,6256 __________________ [B]90'ZR-1[/B] #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold [B]08 C6 Z51[/B] Crystal Red Metallic Sold Vararam Intake, Tune, Sold [B]05 C6 Z51[/B] Red/Black Sold [B]90'ZR-1[/B] #1723 Black/Gray Sold but not forgotten [B]91' Z51 L98[/B] White Vert. My First, you always remember your first. Sold.

10-13-2018	#9
geezer Join Date: Aug 2010 Location: ottawa canada Posts: 155	Re: Fuel pump replacement for 91Z.. To your Question: yes the GM # is 25163473.

10-14-2018	#10
Flyman 27 Join Date: Apr 2017 Location: Wayne Illinois Posts: 402	Re: Fuel pump replacement for 91Z.. Here are 2 new ones, they include what you need. https://www.ebay.com/itm/16328352010...84.m1555.l2649 __________________ 91-#1935 Black/black & gray, Haibeck 500 Cams by Pete