C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

AC Delco Water Pump Question

Thread Tools
 
Search this Thread
 
Old Mar 8, 2009 | 01:33 AM
  #1  
LT1CORVETTE's Avatar
LT1CORVETTE
Thread Starter
Racer
10 Year Member
 
Joined: May 2003
Posts: 466
Likes: 1
From: Laguna Niguel California
Default AC Delco Water Pump Question

1996 Z51 LT1 Corvette
Long story short, I broke the upper metal heater hose connector tube that comes off the top of the water pump while attempting to change my heater hoses today, so it looks like a new water pump is on the to do list.
It appears rock auto has the best price on an ac delco replacment and shows it comes with new gaskets. Do these come with the inlet thermostat housing and a new thermostat? There picture is showing it without, but most of the other magazines show it with. Any knowledge would be appreciated. Thanks.
Reply
Old Mar 8, 2009 | 03:31 AM
  #2  
zzpw3x's Avatar
zzpw3x
Advanced
10 Year Member
 
Joined: Jun 2008
Posts: 63
Likes: 1
From: Pittsburgh PA
Default

I've always had prompt responses when I've asked rockauto questions like that one. Send customer service an email.

Dale
Reply
Old Mar 8, 2009 | 01:34 PM
  #3  
LT1CORVETTE's Avatar
LT1CORVETTE
Thread Starter
Racer
10 Year Member
 
Joined: May 2003
Posts: 466
Likes: 1
From: Laguna Niguel California
Default

Originally Posted by zzpw3x
I've always had prompt responses when I've asked rockauto questions like that one. Send customer service an email.

Dale
Good to know. Thank you dale.
Reply
Old Mar 8, 2009 | 01:48 PM
  #4  
MikeC4's Avatar
MikeC4
Melting Slicks
 
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Default

I don't know about Rock Auto prices on WP's, but "thepartsladi" is who I use for new AC-Delco WP's. They come complete with new T-stat, T-stat housing and gaskets. I use Rock Auto for my non-vette applications and they have never let me down.

http://search.stores.ebay.com/Thepar...346802QQsofpZ0

Reply
Old Mar 8, 2009 | 01:56 PM
  #5  
SunCr's Avatar
SunCr
Le Mans Master
10 Year Member
 
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Default

Isn't that a threaded tube? If so it's servicable for a couple of bucks.
Reply
Old Mar 8, 2009 | 02:21 PM
  #6  
LT1CORVETTE's Avatar
LT1CORVETTE
Thread Starter
Racer
10 Year Member
 
Joined: May 2003
Posts: 466
Likes: 1
From: Laguna Niguel California
Default

I am not sure. I am planning to pull and take apart the water pump today if time allows. Here is the tube in its current state.






Reply
Old Mar 8, 2009 | 02:31 PM
  #7  
MikeC4's Avatar
MikeC4
Melting Slicks
 
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Default

that's just a compression fit tube. You should be able to tap it in good and snug using rubber mallet.

Your WP appears to be clean, is there any other problem you are having other than that fitting popping out ?

Reply
Old Mar 8, 2009 | 03:08 PM
  #8  
steve40th's Avatar
steve40th
Le Mans Master
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 1999
Posts: 9,922
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
Default

I had one, still in Vette, come out. I JB welded it back in.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Mar 8, 2009 | 04:39 PM
  #9  
LT1CORVETTE's Avatar
LT1CORVETTE
Thread Starter
Racer
10 Year Member
 
Joined: May 2003
Posts: 466
Likes: 1
From: Laguna Niguel California
Default

Thank you so much guys. Saved me buying a new pump and some bloody knuckles putting it in. I'll put some some jb weld on it, tap it back in and report back. I am not a strong guy, so how I managed to (break) it has been eating at my mind.

No other problems what so ever with the water pump (its only 3 years old and has about 8k miles on it)
Reply
Old Mar 8, 2009 | 04:56 PM
  #10  
steve40th's Avatar
steve40th
Le Mans Master
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 1999
Posts: 9,922
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
Default

Originally Posted by LT1CORVETTE
Thank you so much guys. Saved me buying a new pump and some bloody knuckles putting it in. I'll put some some jb weld on it, tap it back in and report back. I am not a strong guy, so how I managed to (break) it has been eating at my mind.

No other problems what so ever with the water pump (its only 3 years old and has about 8k miles on it)
I had that one blow out on the racetrack. It was quite the ride
Reply
Old Mar 8, 2009 | 06:09 PM
  #11  
MikeC4's Avatar
MikeC4
Melting Slicks
 
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Default

Originally Posted by steve40th
I had one, still in Vette, come out. I JB welded it back in.
This is an excellent idea. May I suggest that you use medium grit sandpaper to scuff up the part of the fitting that goes inside the WP housing. Fom the picture, it appears to be very smooth. The sandpapaer will put small grooves on this fitting allowing the JB Weld to get a better grip. If the inside hole in the WP is smooth, I would also try to sand a little bit of that area as well.

Reply
Old Mar 8, 2009 | 09:07 PM
  #12  
SunCr's Avatar
SunCr
Le Mans Master
10 Year Member
 
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Default

Didn't know GM went to a compression fitting - everyone I've seen is threaded and they come in a couple of lengths. Most Dealers seem to have them hanging near the Counter (next to the Coolant Sealant Tabs).
Reply
Old Mar 8, 2009 | 09:21 PM
  #13  
steve40th's Avatar
steve40th
Le Mans Master
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 1999
Posts: 9,922
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
Default

You could always get a brass fitting and screw it in, with RTV, if your concerned. But JB Weld with a scuffed factory fitting will work too.
Reply
Old Mar 9, 2009 | 12:31 AM
  #14  
LT1CORVETTE's Avatar
LT1CORVETTE
Thread Starter
Racer
10 Year Member
 
Joined: May 2003
Posts: 466
Likes: 1
From: Laguna Niguel California
Default

Thanks for all the help gentlemen. I did not get around to installing it today, but will hopefully get it done tomorrow evening utilizing the scruff up and jbweld approach.
Reply
Old Mar 9, 2009 | 02:55 PM
  #15  
MikeC4's Avatar
MikeC4
Melting Slicks
 
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Default

Originally Posted by SunCr
Didn't know GM went to a compression fitting - everyone I've seen is threaded and they come in a couple of lengths. Most Dealers seem to have them hanging near the Counter (next to the Coolant Sealant Tabs).
For whatever reason, the LT1's WP tubes are compression fit. The tube that he is holding in the first picture is the entire tube, it has not broken off at the thread line, because there are no threads.

In the second pic, you can see(almost) that the bore where this tube inserts is smooth. I have tried removing(unscrewing) this same tube from an old LT1 WP I had lying around, and it just spins. I took off the T-stat and saw that the inside of the bore for this fitting is in fact smooth.

Reply

Get notified of new replies

To AC Delco Water Pump Question





All times are GMT -4. The time now is 01:07 PM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE