LS3 Water Pump on Camaro LS1
LS3 Water Pump on Camaro LS1 I'm going to need a water pump soon since my 99 Z28 has the original one from the factory and the car has 215k miles. I was told the LS3 pump is a great upgrade but it has to be modified to fit the LS1 body. Anybody know the mods that need to be done to the LS3 to get to work with the Fbody Accessories, which LS3 Pump should I get C6, Camaro, G8? I've tried searching for info but various posts state different fixes.
Teching In
Joined: Oct 2005
Posts: 23
Likes: 0
ttt
I've also done a ton of searching and agree that there is a lot of conflicting information. Ideally, I would like to put a LS3 water pump on my 2000 Firebird Formula. I have read that the 2010 camaro ss will fit if you use a puller to pull the pulley out 8mm. I have also read conflicting reports that the "LS2/LS3 Corvette water pump will bolt on with a 3/4" spacer.
https://ls1tech.com/forums/generatio...mp-pulley.html
If the ls3 pump requires much more modification other than a spacer, I will probably use a ls2 pump (2006 GTO 6.0L) which is supposed to be a direct bolt on.
I've also done a ton of searching and agree that there is a lot of conflicting information. Ideally, I would like to put a LS3 water pump on my 2000 Firebird Formula. I have read that the 2010 camaro ss will fit if you use a puller to pull the pulley out 8mm. I have also read conflicting reports that the "LS2/LS3 Corvette water pump will bolt on with a 3/4" spacer.
https://ls1tech.com/forums/generatio...mp-pulley.html
If the ls3 pump requires much more modification other than a spacer, I will probably use a ls2 pump (2006 GTO 6.0L) which is supposed to be a direct bolt on.
Yes, it fits. I have read that it's a moe efficient pump at higher RPM's. I don't really know if that's true, though. But there's a couple of small things to be aware of.
First, it's considerably shorter than the LS1 part. That was the reason I changed mine, because I needed a little more space. Notice the 3/4" spacers under the ports.
Second, The hose connection is in a different spot. You'll need to fab a new hose (not a big deal).
And, third, you'll need to use the matching pulley tensioner.
First, it's considerably shorter than the LS1 part. That was the reason I changed mine, because I needed a little more space. Notice the 3/4" spacers under the ports.
Second, The hose connection is in a different spot. You'll need to fab a new hose (not a big deal).
And, third, you'll need to use the matching pulley tensioner.
Teching In
Joined: Jan 2017
Posts: 9
Likes: 0
(Later) LS3/L99 Water Pump on LS1 This post has helped me a lot - thanks .boB. Can you please confirm this has been working for you? It looks a bit like the belt is not fully on the tensioner.
For others researching this, it appears that there are (at least) two versions of LS3 pumps. I believe the pump discussed here is p/n 19180610 (ACDelco 251-728), which fits 2012-2015 Camaros (and Corvettes, but I've found conflicting info on which years). I've seen other posts discussing how a Camaro LS3 pump works with truck accessories - those are offset even further out from the block, I believe. It seems those posts are referring to the 2010-2011 Camaro pump. See for example post #4 here, which suggests 19180610 has shallower pulley/block offset: https://ls1tech.com/forums/generatio...pump-pics.html (It seems L99 means automatic LS3.) Until I found this post, I wasn't sure myself.
On the tensioner, it looks like 12628025 is the one to use with 19180610.
Anyone with info on this please feel free to confirm or correct anything I've said. I'm just trying to figure this stuff out myself, and there is so much conflicting and/or unclear info out there. Thanks!
For others researching this, it appears that there are (at least) two versions of LS3 pumps. I believe the pump discussed here is p/n 19180610 (ACDelco 251-728), which fits 2012-2015 Camaros (and Corvettes, but I've found conflicting info on which years). I've seen other posts discussing how a Camaro LS3 pump works with truck accessories - those are offset even further out from the block, I believe. It seems those posts are referring to the 2010-2011 Camaro pump. See for example post #4 here, which suggests 19180610 has shallower pulley/block offset: https://ls1tech.com/forums/generatio...pump-pics.html (It seems L99 means automatic LS3.) Until I found this post, I wasn't sure myself.
On the tensioner, it looks like 12628025 is the one to use with 19180610.
Anyone with info on this please feel free to confirm or correct anything I've said. I'm just trying to figure this stuff out myself, and there is so much conflicting and/or unclear info out there. Thanks!
Trending Topics
Works just fine. Raced all last season without any problems at all. Car runs considerably cooler than almost anything on the track, but there's a lot of variables involved. So I wouldn't attribute that to the pump.
I did use the matching tensioner.
Also, note that the inlet is in a different spot than the LS1. So you need to change your hoses a little bit.
I did use the matching tensioner.
Also, note that the inlet is in a different spot than the LS1. So you need to change your hoses a little bit.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Teching In
Joined: Jan 2017
Posts: 9
Likes: 0
Excellent thanks .boB! I'm doing a custom swap and my rad inlet is at the top corner of the driver's side. This pump's config will make hose routing easier, which is why I want to run it.
Also hoping to run steam tube into spacer on driver's side. Makes more sense to me to push air into the rad (bib for small hose to expansion tank is right above rad inlet) instead of the block. But it seems that doesn't matter either if you're running nice and cool. I am deleting power steering, and assume PS bracket interference is the main reason people run it to the passenger's side...?
Also hoping to run steam tube into spacer on driver's side. Makes more sense to me to push air into the rad (bib for small hose to expansion tank is right above rad inlet) instead of the block. But it seems that doesn't matter either if you're running nice and cool. I am deleting power steering, and assume PS bracket interference is the main reason people run it to the passenger's side...?