Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Help! Cant get oil pump on!

Thread Tools
 
Search this Thread
 
Old Jul 22, 2016 | 09:43 AM
  #1  
wantmore's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Jan 2008
Posts: 44
Likes: 0
From: Woodstock,GA
Default Help! Cant get oil pump on!

Hello all, I havent posted here in years but have always been a lurker reading threads, etc. So I just want to say thanks for all the insight over the years before I ask my question.

So Im in the middle of a camswap(tick torquemax stg 2) and for the life of me I cannot get the oil pump back on and over the pickup tube while trying to align the gear in pump to get back onto crank. My question is, can I dissassemble the pump and put the housing on and back on pickup tube then assemble the pump after its mounted? Looks simple enough but didnt know if I had to have shims to do this. It is just a GM pump so nothing aftermarket. Looking for anyone that had this issue as well. And yes the oil pan is lower a little bit already.


Thanks in advance
Reply
Old Jul 22, 2016 | 10:02 AM
  #2  
svslow's Avatar
TECH Fanatic
10 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Oct 2015
Posts: 1,280
Likes: 28
From: Pittsboro, IN
Default

Yes you can take the pump apart. Generally, this is a necessary step the align the pump gears properly anyways.
Reply
Old Jul 22, 2016 | 10:12 AM
  #3  
Mercier's Avatar
TECH Addict
iTrader: (15)
 
Joined: Jun 2014
Posts: 2,384
Likes: 5
From: Baton Rouge, LA
Default

https://ls1tech.com/forums/generatio...ted-ls6-2.html

Exactly. You should take it apart for installation. We were just discussing this in another thread(above) where you can see a pic of the process.
Reply
Old Jul 22, 2016 | 10:15 AM
  #4  
5FOX3's Avatar
On The Tree
 
Joined: Sep 2014
Posts: 138
Likes: 0
Default

Why should you take it apart for installation? I held mine In my hand yesterday and put the sleeve from the crank into the pump then put it onto the crank as one unit lining up the keyway and it works mint...just did that yesterday
Reply
Old Jul 22, 2016 | 01:00 PM
  #5  
Mercier's Avatar
TECH Addict
iTrader: (15)
 
Joined: Jun 2014
Posts: 2,384
Likes: 5
From: Baton Rouge, LA
Default

Not saying everyone does it..but if you want insurance to get the maximum life out of your oil pump, you align/center it on the crank. You do this by placing the body and the rotor on with the pump mounting bolts finger-tight, then feeler gauges between the rotor and body to center it all. Torque the 4 mounting bolts then attach the cover.

It's one of those "right way" steps that a lot of folks seem to skip that only takes 5 minutes.

Last edited by Mercier; Jul 23, 2016 at 04:07 PM.
Reply
Old Jul 22, 2016 | 01:30 PM
  #6  
wantmore's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Jan 2008
Posts: 44
Likes: 0
From: Woodstock,GA
Default

Thanks Mercier, and everyone else. I will just buy some of these feeler gauges and dissemble it do it this way.
Reply
Old Jul 22, 2016 | 07:13 PM
  #7  
svede1212's Avatar
12 Second Club
iTrader: (3)
 
Joined: Apr 2004
Posts: 1,512
Likes: 3
From: Grand Rapids, Michigan
Default

and in my Melling instructions it says it voids the warranty. . .
Reply
Old Jul 23, 2016 | 05:06 AM
  #8  
Mercier's Avatar
TECH Addict
iTrader: (15)
 
Joined: Jun 2014
Posts: 2,384
Likes: 5
From: Baton Rouge, LA
Default

Originally Posted by svede1212
and in my Melling instructions it says it voids the warranty. . .
I don't doubt they put some generic CYA language in there like that..but worth noting at least that the 2x 10296 I bought in the last year came with a separate pump housing gasket in the box along with the preassembled pump.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jul 23, 2016 | 08:49 AM
  #9  
KCS's Avatar
KCS
Moderator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (20)
 
Joined: Mar 2005
Posts: 8,859
Likes: 323
From: Conroe, TX
Default

Originally Posted by svede1212
and in my Melling instructions it says it voids the warranty. . .
Lol, I'll happily sacrifice the warranty of a $120 oil pump to make sure it's clean and installed correctly to protect my $3k+ engine.

I've found that it's easier to get the pickup tube bolted up when the pump is disassembled and without the drive gear on the snout. You get a lot of wiggle room to get the pickup flange lined up and avoid pinching the o-ring. Then you can get the bare housing bolted up, centered, and then assembled.
Reply
Old Jul 23, 2016 | 01:30 PM
  #10  
whatsa347's Avatar
TECH Enthusiast
iTrader: (6)
 
Joined: May 2009
Posts: 634
Likes: 3
From: clear lake, Texas
Default

Originally Posted by KCS
Lol, I'll happily sacrifice the warranty of a $120 oil pump to make sure it's clean and installed correctly to protect my $3k+ engine.

I've found that it's easier to get the pickup tube bolted up when the pump is disassembled and without the drive gear on the snout. You get a lot of wiggle room to get the pickup flange lined up and avoid pinching the o-ring. Then you can get the bare housing bolted up, centered, and then assembled.
I have no idea what this means but I'm about to tackle my first heads cam swap in my C5, will gladly pay you in whatever liquor tickles your fancy to show me this.
Reply
Old Jul 23, 2016 | 04:05 PM
  #11  
Mercier's Avatar
TECH Addict
iTrader: (15)
 
Joined: Jun 2014
Posts: 2,384
Likes: 5
From: Baton Rouge, LA
Default

Originally Posted by whatsa347
I have no idea what this means but I'm about to tackle my first heads cam swap in my C5, will gladly pay you in whatever liquor tickles your fancy to show me this.
Look about 4-5 replies back in this thread where there is a link to another thread where KCS posted a pic of it.
Reply
Old Jul 24, 2016 | 10:33 AM
  #12  
KCS's Avatar
KCS
Moderator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (20)
 
Joined: Mar 2005
Posts: 8,859
Likes: 323
From: Conroe, TX
Default

Originally Posted by whatsa347
I have no idea what this means but I'm about to tackle my first heads cam swap in my C5, will gladly pay you in whatever liquor tickles your fancy to show me this.
Now that I think about it, I probably should have added that this works with aftermarket timing sets where the drive gear for the oil pump is separate from the timing chain sprocket. However, that's where this "trick" works the best; when you have an aftermarket double roller and the pump is spaced out about 1/8" forward and the pickup tube doesn't line up as well.

Still, it's really simple, just maybe a little hard to explain. Here's the pic I posted in another thread:

Name:  pumphousingalignment_zps39abfd63.jpg
Views: 1242
Size:  37.9 KB

The gear that the oil pump housing is centered on is the drive gear for the oil pump. With that gear on, there's only a little bit of clearance between it and the pump housing so if you try to bolt up the pickup tube, it doesn't have much room to wiggle or rock to line up. The pickup can go in crooked and pinch the o-ring.

Now if you leave the drive gear off of the snout when you put the pump on, then it has a lot more room to move, allowing you to line up the pickup tube properly and avoid pinching the o-ring. With the pickup tube installed and the bolt torqued, you can put the drive gear on over the snout of the crank and get the pump centered.
Reply




All times are GMT -5. The time now is 08:10 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE