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

Low oil pressure

Thread Tools
 
Search this Thread
 
Old Feb 3, 2018 | 02:10 PM
  #1  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default Low oil pressure

Recently noticed my oil pressure getting lower. Seem 20-25 Cold. It will hit 60 cold under high revs.

when it gets hot its like 5-10 psi.

been like this for a few weeks

ive replaced the oil pick up o ring, oil pump, pressure switch and aftermarket gauge.

whats next? Where does the oil go between the pump and pressure switch?
Reply
Old Feb 3, 2018 | 02:52 PM
  #2  
computerz's Avatar
Staging Lane
 
Joined: May 2017
Posts: 61
Likes: 0
Default

Since you already replaced the usual suspects, unfortunately that usually means things like worn cam bearings, rod and main bearings.

Sometimes the cam retainer gasket, or the (early design) barbell can bleed off pressure too.
Reply
Old Feb 3, 2018 | 03:22 PM
  #3  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default

Been driving it for 2 years. Its got 255k on it.

2002, 6.0 Silverado.

would it be worth doing the cam cover or just rebuild engine?

Reply
Old Feb 3, 2018 | 03:42 PM
  #4  
Gooze_1's Avatar
On The Tree
iTrader: (3)
 
Joined: Apr 2015
Posts: 105
Likes: 0
Default

With that many miles I would just rebuild
Reply
Old Feb 3, 2018 | 04:31 PM
  #5  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

Originally Posted by Gooze_1
With that many miles I would just rebuild
^^^^^This. It has lived a good life!
Reply
Old Feb 3, 2018 | 09:07 PM
  #6  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default

Rings
bearings
gasket kit
valve job?
lifters
what else do I need to order for a full rebuild.

thinking a cam for towing.

hedders?
bigger tb?
Reply
Old Feb 3, 2018 | 10:04 PM
  #7  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

Ya know what? Call WS6store and see how good a deal they can do ya on a kit. They have really good deals on the stuff you need, AND the will customize a kit to what you EXACTLY need.
Reply
Old Feb 4, 2018 | 12:02 PM
  #8  
cookseyb's Avatar
TECH Resident
 
Joined: Apr 2010
Posts: 926
Likes: 18
From: Central Texas
Default

Originally Posted by G Atsma
Ya know what? Call WS6store and see how good a deal they can do ya on a kit. They have really good deals on the stuff you need, AND the will customize a kit to what you EXACTLY need.
What he said...
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 Feb 4, 2018 | 03:03 PM
  #9  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default

Originally Posted by cookseyb
What he said...
put the new cam plate cover on. Still low. I want to know for sure what the issue Is before I rebuild it.
Reply
Old Feb 4, 2018 | 03:32 PM
  #10  
moekluse's Avatar
TECH Enthusiast
iTrader: (2)
 
Joined: Nov 2015
Posts: 543
Likes: 4
From: Nc
Default

Yep that's average pressure for 250,xxx+ miles haha. Cylinders are finally worn down now so boost or spray the **** out of it and not worry about ring gap haha
Reply
Old Feb 4, 2018 | 08:02 PM
  #11  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

Originally Posted by Andrewhuffman

put the new cam plate cover on. Still low. I want to know for sure what the issue Is before I rebuild it.
The engine is worn out. THAT is the issue.
Reply
Old Feb 5, 2018 | 06:35 AM
  #12  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default

Originally Posted by moekluse
Yep that's average pressure for 250,xxx+ miles haha. Cylinders are finally worn down now so boost or spray the **** out of it and not worry about ring gap haha
how long do you think it will continue to run?
Reply
Old Feb 5, 2018 | 10:25 AM
  #13  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

He's yanking your chain. Spray or boost it, and watch it blow, SOON!
Reply
Old Feb 5, 2018 | 03:52 PM
  #14  
moekluse's Avatar
TECH Enthusiast
iTrader: (2)
 
Joined: Nov 2015
Posts: 543
Likes: 4
From: Nc
Default

Originally Posted by G Atsma
He's yanking your chain. Spray or boost it, and watch it blow, SOON!
sushhhhhhh lol
Reply
Old Feb 5, 2018 | 10:48 PM
  #15  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default

Originally Posted by moekluse
sushhhhhhh lol
warning light came on today. Tomrrow might be the day
Reply
Old Feb 5, 2018 | 11:09 PM
  #16  
jetech's Avatar
TECH Fanatic
Veteran: Air Force
5 Year Member
Liked
Community Favorite
 
Joined: Jan 2018
Posts: 1,250
Likes: 239
From: Dade City, Fl.
Default

Band Aid...shim the pump
Reply
Old Feb 6, 2018 | 02:37 AM
  #17  
sjsingle1's Avatar
TECH Senior Member
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Feb 2010
Posts: 6,755
Likes: 292
From: Fort Worth TX
Default

the cam plate gasket on my engine was basically gone when I tore it down......so I think for the price of a new plate its beats a rebuild anyday

a new oil pump would not hurt either....
Reply
Old Feb 6, 2018 | 06:48 AM
  #18  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default

Originally Posted by sjsingle1
the cam plate gasket on my engine was basically gone when I tore it down......so I think for the price of a new plate its beats a rebuild anyday

a new oil pump would not hurt either....
tried all that
Reply
Old Feb 6, 2018 | 08:23 AM
  #19  
computerz's Avatar
Staging Lane
 
Joined: May 2017
Posts: 61
Likes: 0
Default

Time for a teardown?

btw, if this has only been an issue for a few weeks, did anything happen just prior to that? Did it run low on oil for example?
Reply
Old Feb 6, 2018 | 08:39 AM
  #20  
Andrewhuffman's Avatar
Thread Starter
Teching In
 
Joined: Feb 2016
Posts: 36
Likes: 0
From: Jacksonville
Default

Originally Posted by computerz
Time for a teardown?

btw, if this has only been an issue for a few weeks, did anything happen just prior to that? Did it run low on oil for example?
nope. Never skipped a beat
Reply



All times are GMT -5. The time now is 05:57 PM.

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