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

Any difference between 98-02 LS1 heads?

Thread Tools
 
Search this Thread
 
Old Jan 28, 2003 | 06:22 PM
  #1  
RTCamaroSS's Avatar
Thread Starter
TECH Resident
 
Joined: May 2002
Posts: 829
Likes: 0
From: Fremont, CA
Default Any difference between 98-02 LS1 heads?

I need to buy a new set of heads, my #6 plug is stripped.. i have a 99 SS with stock heads. Ive been looking for some stock heads around the other boards, are the 2002 heads any different from 1999 heads? As far as flow and compression goes? Basically, besides replacing a head with a bad plug hole, will i see any kind of gain in performance? Thanks!
Reply
Old Jan 28, 2003 | 07:36 PM
  #2  
GeorgeC's Avatar
TECH Junkie
 
Joined: Nov 2001
Posts: 3,987
Likes: 0
From: Melbourne, FL
Default Re: Any difference between 98-02 LS1 heads?

AFAIK, the only differences are that 97-98 heads used a perimeter bolt pattern for the valvecovers, whereas the 99-up LS1 heads use a centerbolt valvecover.
Reply
Old Jan 28, 2003 | 08:38 PM
  #3  
wrencher's Avatar
wrencher
20 Year Member
iTrader: (2)
 
Joined: Aug 2002
Posts: 4,762
Likes: 2
From: Chicagoland
Default Re: Any difference between 98-02 LS1 heads?

The 97-98 also have a dimple on the sealing surface & use different head gaskets than the 99 & up.
Reply
Old Jan 29, 2003 | 07:32 PM
  #4  
mrestrictrplate3's Avatar
Teching In
 
Joined: Mar 2002
Posts: 42
Likes: 0
From: bradley beach nj
Default Re: Any difference between 98-02 LS1 heads?

h 2002 heads are a diffrent casting # and flow better. they ae a cleaner casting with less casting flash. my 2002 made about 10 hp more than all the 2001 cars hes seen wit the same cam and no other mods. h says all the other 2002s are the same as far as those gains go... no only if i could have a good 6 speed, as its a piece of crap after 10k like all he other cars i see
Reply
Old Jan 30, 2003 | 05:31 PM
  #5  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: Any difference between 98-02 LS1 heads?

I havent heard of 2002 being any different than 2001, but i can tell you 97 thru 99 heads flow less because of casting roughness and different comb. chamber relief top cuts, and valve shapes also. 2000 and up are definitely better out of the box than previous years.
Reply
Old Jan 31, 2003 | 02:12 PM
  #6  
BlakCamZ28's Avatar
Teching In
 
Joined: Jul 2002
Posts: 45
Likes: 0
From: Southwick,MA
Default Re: Any difference between 98-02 LS1 heads?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by RTCamaroSS:
<strong> I need to buy a new set of heads, my #6 plug is stripped..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Why don't you just heli-coil it? That's what I did when I stripped one of the plug holes in my heads. 30 bucks and good as new <img border="0" alt="[burn out]" title="" src="graemlins/gr_burnout.gif" />

<small>[ January 31, 2003, 02:13 PM: Message edited by: BlakCamZ28 ]</small>
Reply




All times are GMT -5. The time now is 04:47 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