LS1TECH - Camaro and Firebird Forum Discussion

Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

How to identify LS3 valves?

Thread Tools
 
Search this Thread
 
Old Mar 18, 2010 | 08:24 AM
Share
  #1  
Jim85IROC's Avatar
Jim85IROC
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Aug 2002
Posts: 529
Likes: 0
From: Readsboro, VT
Default How to identify LS3 valves?
How do I visually identify LS3 valves as opposed to L92 valves? It's getting close to swap-meet season and I want to be prepared.
Reply
0
Old Mar 18, 2010 | 11:48 AM
Share
  #2  
1lejohn's Avatar
1lejohn
TECH Fanatic
iTrader: (9)
 
Joined: Mar 2004
Posts: 1,318
Likes: 0
From: Pasadena Texas
Default
I' m thinking that they have some pink paint dots on them. I had some and sold them awhile back. The best way to tell is buy the weight if they are used. The exhausts are the same.
Reply
0
Old Mar 18, 2010 | 12:16 PM
Share
  #3  
Jim85IROC's Avatar
Jim85IROC
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Aug 2002
Posts: 529
Likes: 0
From: Readsboro, VT
Default
The weight isn't really going to help me if I'm looking at fully assembled heads... and of course, if the heads are used, there probably won't be a pink dot.

There's really no way to identify them visually?
Reply
0
Old Mar 18, 2010 | 12:30 PM
Share
  #4  
camarols1's Avatar
camarols1
TECH Enthusiast
iTrader: (17)
 
Joined: Oct 2006
Posts: 699
Likes: 2
From: NW Chicago Suburbs
Default
I would just bring a spring compressor with you when shopping and pull one valve to look at so you can be sure you are getting a head with hollow valves.
The LS3 valve is a three piece design, and you can easily see the line where the hollow tube is welded in between the valve head and the tip.

Jim
Reply
0
Old Mar 18, 2010 | 12:33 PM
Share
  #5  
Petraszewsky's Avatar
Petraszewsky
TECH Resident
15 Year Member
iTrader: (28)
 
Joined: Oct 2008
Posts: 895
Likes: 1
From: USA
Default
The LS3 valves are shinier than the L92 valves...Check out the pics in my profile...
Reply
0
Old Mar 18, 2010 | 12:44 PM
Share
  #6  
Jim85IROC's Avatar
Jim85IROC
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Aug 2002
Posts: 529
Likes: 0
From: Readsboro, VT
Default
Originally Posted by Petraszewsky
The LS3 valves are shinier than the L92 valves...Check out the pics in my profile...
what pics would you be referring to? I don't see any pics of valves in your LS2 album?
Reply
0
Old Mar 18, 2010 | 12:49 PM
Share
  #7  
Petraszewsky's Avatar
Petraszewsky
TECH Resident
15 Year Member
iTrader: (28)
 
Joined: Oct 2008
Posts: 895
Likes: 1
From: USA
Default
The pic with the grizzly can next to it...I've also got a link explaining it let me find it real quick..
Reply
0

Trending Topics

Old Mar 18, 2010 | 12:50 PM
Share
  #8  
SweetS10V8's Avatar
SweetS10V8
12 Second Club
iTrader: (4)
 
Joined: Jun 2004
Posts: 2,580
Likes: 3
From: Michigan
Default
https://ls1tech.com/forums/generatio...omparison.html
Reply
0
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 Mar 18, 2010 | 12:55 PM
Share
  #9  
Petraszewsky's Avatar
Petraszewsky
TECH Resident
15 Year Member
iTrader: (28)
 
Joined: Oct 2008
Posts: 895
Likes: 1
From: USA
Default
Beat me to it...that's exactly what I was going to link too...hahaha
Reply
0
Old Mar 18, 2010 | 12:58 PM
Share
  #10  
Jim85IROC's Avatar
Jim85IROC
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Aug 2002
Posts: 529
Likes: 0
From: Readsboro, VT
Default
Perfect. Thanks!
Reply
0
Old Mar 18, 2010 | 06:49 PM
Share
  #11  
SweetS10V8's Avatar
SweetS10V8
12 Second Club
iTrader: (4)
 
Joined: Jun 2004
Posts: 2,580
Likes: 3
From: Michigan
Default
No problem....
Reply
0
Old Mar 19, 2010 | 09:49 PM
Share
  #12  
cam75w/ls1's Avatar
cam75w/ls1
TECH Apprentice
iTrader: (2)
 
Joined: Jul 2005
Posts: 305
Likes: 0
From: Texas
Default
Another thing to look for when the LS3's are installed is the stem height. The intakes will be .020 higher than the exhaust. So if you look at the valves in a row fashion it'll be up,down,up,down,etc.
Reply
0
Old Mar 20, 2010 | 04:17 AM
Share
  #13  
Petraszewsky's Avatar
Petraszewsky
TECH Resident
15 Year Member
iTrader: (28)
 
Joined: Oct 2008
Posts: 895
Likes: 1
From: USA
Default
^^^^Mine weren't like that...I have read about some ported ( WCCH , and others ) heads being that way though...
Reply
0
Old Mar 20, 2010 | 06:49 AM
Share
  #14  
SweetS10V8's Avatar
SweetS10V8
12 Second Club
iTrader: (4)
 
Joined: Jun 2004
Posts: 2,580
Likes: 3
From: Michigan
Default
I can measure them Monday to verify. I have one of each loose.
Reply
0
Old Mar 20, 2010 | 09:39 AM
Share
  #15  
See5's Avatar
See5
FormerVendor
iTrader: (53)
 
Joined: Dec 2002
Posts: 874
Likes: 1
From: Hobart, WI
Default
How to identify LS3 valves?-ls3-l-l92-r-intake-valves.jpg

LS3 left and L92 right

The finish of the valve is different. It is actually quite obvious.
Reply
0
Old Mar 20, 2010 | 09:48 AM
Share
  #16  
SweetS10V8's Avatar
SweetS10V8
12 Second Club
iTrader: (4)
 
Joined: Jun 2004
Posts: 2,580
Likes: 3
From: Michigan
Default
Originally Posted by See5
Attachment 222454

LS3 left and L92 right

The finish of the valve is different. It is actually quite obvious.
As noted in the link above!!

Here are the pics for lazy people.

Originally Posted by SweetS10V8






Reply
0
Old Mar 20, 2010 | 10:04 AM
Share
  #17  
1lejohn's Avatar
1lejohn
TECH Fanatic
iTrader: (9)
 
Joined: Mar 2004
Posts: 1,318
Likes: 0
From: Pasadena Texas
Default
If they are used you won't be able to tell the difference. They won't be clean like that. Weighing them is best.The best bet is to buy new ones they are cheap enough.
Reply
0
Old Mar 20, 2010 | 10:06 AM
Share
  #18  
supermouse4's Avatar
supermouse4
Launching!
 
Joined: Nov 2009
Posts: 245
Likes: 1
From: Illinois
Default
I heard that the LS3 valves were lighter than the L92 valves. Interesting to see how much the weight difference is. Also interesting seeing the different finish on the intake valves.
Reply
0
Tags
Back to Subforum
Generation IV Internal Engine
View Next Unread
L92 cam phaser...




Advanced Search

All times are GMT -5. The time now is 11:38 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