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

head gaskets

Thread Tools
 
Search this Thread
 
Old Dec 16, 2005 | 03:53 PM
  #1  
redmist's Avatar
Thread Starter
TECH Regular
 
Joined: Feb 2004
Posts: 438
Likes: 0
Default head gaskets

When putting LS6 heads (243 casting) on a LS1 what head gaskets do you use?
Reply
Old Dec 16, 2005 | 04:02 PM
  #2  
GuitsBoy's Avatar
TECH Senior Member
iTrader: (4)
 
Joined: Apr 2003
Posts: 6,249
Likes: 3
From: Long Island, NY
Default

You have many choices. You have to decide on what material you want, what quench you want and what compression ratio you want. Cometics are popular and come in good sizes but are expensive and hard to find. GM MLS gaskets only come in .060 and are dirt cheap but reliable. Few other optins out there as well
Reply
Old Dec 16, 2005 | 04:13 PM
  #3  
WsSickLs6's Avatar
Banned
 
Joined: Jul 2005
Posts: 0
Likes: 0
From: phoenix
Default

Cometics are very good and reusable i believe...
Reply
Old Dec 16, 2005 | 04:35 PM
  #4  
redmist's Avatar
Thread Starter
TECH Regular
 
Joined: Feb 2004
Posts: 438
Likes: 0
Default

Understand but is there any differences in the cutouts (coolant passages etc) that I need to be aware of to bolt them to an LS1 block?
Thanks
Reply
Old Dec 17, 2005 | 11:32 AM
  #5  
Phil'sC5vette's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2004
Posts: 1,074
Likes: 0
From: Tampa
Default

Im hearing alot about cosmetic failing= blown head gasket.

More and more shops are going back to MSL Gasket. I allow for .054 quench for my compression
Reply
Old Dec 17, 2005 | 12:04 PM
  #6  
SideStep's Avatar
TECH Fanatic
20 Year Member
 
Joined: Mar 2003
Posts: 1,946
Likes: 1
Default

I have installed 4 sets of Cometics now and re-used 1 set (I always use Copper Spray sealant). No issues ever. The coolant passages are the same. Also, beware you can install any gasket backwards and cause serious cooling problems...


Last edited by SideStep; Dec 17, 2005 at 12:13 PM.
Reply
Old Dec 17, 2005 | 01:56 PM
  #7  
frodo84's Avatar
On The Tree
20 Year Member
iTrader: (11)
 
Joined: Aug 2003
Posts: 136
Likes: 1
From: Beautiful downtown Texas
Default

You might want to look at SCE Titan copper gaskets. They come in stock bore size and are available in different thicknesses....I will use .043 with my setup.
Reply
Old Dec 17, 2005 | 01:58 PM
  #8  
TAQuickness's Avatar
TECH Junkie
iTrader: (28)
 
Joined: Jan 2004
Posts: 3,250
Likes: 1
From: Houston
Default

Originally Posted by GuitsBoy
You have many choices. You have to decide on what material you want, what quench you want and what compression ratio you want. Cometics are popular and come in good sizes but are expensive and hard to find. GM MLS gaskets only come in .060 and are dirt cheap but reliable. Few other optins out there as well
I come up with 0.049" compressed thickness for GM MLS gaskets. Not a bad quench if you are 0.010" out of the hole
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo
Old Dec 17, 2005 | 02:23 PM
  #9  
GuitsBoy's Avatar
TECH Senior Member
iTrader: (4)
 
Joined: Apr 2003
Posts: 6,249
Likes: 3
From: Long Island, NY
Default

Originally Posted by frodo84
You might want to look at SCE Titan copper gaskets. They come in stock bore size and are available in different thicknesses....I will use .043 with my setup.
I was cautioned that copper gaskets are really on ly a good idea if your block has been O-ringed. I would love to hear some other opinions though.
Reply
Old Dec 17, 2005 | 07:23 PM
  #10  
frodo84's Avatar
On The Tree
20 Year Member
iTrader: (11)
 
Joined: Aug 2003
Posts: 136
Likes: 1
From: Beautiful downtown Texas
Default sce titan

Originally Posted by GuitsBoy
I was cautioned that copper gaskets are really on ly a good idea if your block has been O-ringed. I would love to hear some other opinions though.
I would agree if they were just copper, but check them out (summit sells them, among others) as they also use an elastic bead (for lack of a better term) just like other gaskets intended for street use. I don't think that many people have used them since they are so new. I'm committed to using them, I just bought a set as a reasonable alternative to cometics.

Here's a link: http://www.scegaskets.com/products/ics.html

Last edited by frodo84; Dec 17, 2005 at 07:25 PM. Reason: added a link
Reply
Old Dec 17, 2005 | 08:27 PM
  #11  
Suprfun's Avatar
Teching In
iTrader: (2)
 
Joined: Sep 2004
Posts: 32
Likes: 0
Default

Originally Posted by frodo84
I would agree if they were just copper, but check them out (summit sells them, among others) as they also use an elastic bead (for lack of a better term) just like other gaskets intended for street use. I don't think that many people have used them since they are so new. I'm committed to using them, I just bought a set as a reasonable alternative to cometics.

Here's a link: http://www.scegaskets.com/products/ics.html
Thanks for the info! Please post your opinion of these once you have them in hand. The price seems right. I was planning on using Cometics but these look like they might be another alternative. Anyone else using these?

Mark
Reply
Old Dec 18, 2005 | 10:57 AM
  #12  
redmist's Avatar
Thread Starter
TECH Regular
 
Joined: Feb 2004
Posts: 438
Likes: 0
Default

They don't seem to make them for a stock bore LS1. If you can send a link I would appreciate it. They sound great.
Reply
Old Dec 18, 2005 | 04:03 PM
  #13  
frodo84's Avatar
On The Tree
20 Year Member
iTrader: (11)
 
Joined: Aug 2003
Posts: 136
Likes: 1
From: Beautiful downtown Texas
Default

The SCE Titan gaskets are available in the stock bore size, if that's what you're referring to...I got them from Summit racing.
Reply
Old Dec 18, 2005 | 06:40 PM
  #14  
transAm-98's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Mar 2005
Posts: 625
Likes: 0
From: CA, Bay Area
Default

i put the stock graphites on when i put my 243's on because that's what came in the kit. but i've heard they seal up qiute nice and you get a tad more compression due to a thinner crushed thinkness. but they are a B*TCH to clean up.
Reply




All times are GMT -5. The time now is 12:53 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE