Water pump upgrade
Thread Starter
Pro
Joined: Aug 2013
Posts: 601
Likes: 9
From: Omaha Ne
Water pump upgrade
I am replacing the water pump on my ls1. I heard the ls3 is a bolt on upgrade. Anyone have any information on this? I am aware I need to buy a new thermostat and housing to get this to work.
Thread Starter
Pro
Joined: Aug 2013
Posts: 601
Likes: 9
From: Omaha Ne
When I look up part numbers for the ls1 the ls2 and ls3 I get all different part numbers. I like the ls3 pulley setup better. Just want to make sure I get the correct parts before I tear it all down
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Saturday, I just bought a water pump for my 01 MN6. LS1
no modifications..........part number at O'reilly's is CP5081 new with lifetime warranty
I used my old t stat. from the original pump. 83,000 miles
Used the O ring that came with the pump. had pressure against the housing like the old one. 160
T stat opens like it always did.
no modifications..........part number at O'reilly's is CP5081 new with lifetime warranty
I used my old t stat. from the original pump. 83,000 miles
Used the O ring that came with the pump. had pressure against the housing like the old one. 160
T stat opens like it always did.
Last edited by coupeguy2001; May 12, 2017 at 08:15 PM.
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
What is the difference in them? When I did my build last year I think I got an Old style one (re-man). The T'stat is separate from the water neck and the back is bolted on. The one I took off had the T'stat built into the neck. The back cover was a big plug.
The re-man one was Cardon 58-563
Thanks.
Last edited by Rob 02; May 13, 2017 at 03:50 AM.
Drifting
Joined: Feb 2003
Posts: 1,761
Likes: 235
From: North Carolina
I recently had the original pump replaced on my 98 with one purchased from Rock Auto that looks exactly the same as the original. Also put a new T-stat in and used the original T-stat neck. Here's a pic of the one I picked up from Rock Auto
Last edited by MAC5; May 13, 2017 at 09:45 PM.
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
Thanks 8VETTE7 I got a remanufactured old one, I think. It was easier to find a 160 deg thermostat for being that it was separate from the neck. According to the links, the old one may have been the '04 style.
Last edited by Rob 02; May 14, 2017 at 10:02 PM.
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Safety Car
Joined: Mar 2015
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Likes: 245
You guys do know they sell brand new water pumps?
I swapped out my pump for a brand new Delco from summit.
Brand new.
unless you're going electric, the pump is not considered an upgrade.
Remanufactured are perfectly fine and are sometimes an option, but if you have a worry then let a pro do the job for you.
I swapped out my pump for a brand new Delco from summit.
Brand new.
unless you're going electric, the pump is not considered an upgrade.
Remanufactured are perfectly fine and are sometimes an option, but if you have a worry then let a pro do the job for you.