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

which head bolts?

Thread Tools
 
Search this Thread
 
Old Nov 5, 2012 | 01:42 PM
  #1  
88Fbody6L's Avatar
Thread Starter
On The Tree
iTrader: (5)
 
Joined: Mar 2011
Posts: 126
Likes: 0
From: Indiana
Default which head bolts?

I am putting new style (05) 243 heads on an older style (03) LQ9 block. Which head bolt style do I need? Early or late?
Reply
Old Nov 5, 2012 | 03:53 PM
  #2  
the_merv's Avatar
Banned
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default

What bolts came out of that block?
Reply
Old Nov 5, 2012 | 04:10 PM
  #3  
88Fbody6L's Avatar
Thread Starter
On The Tree
iTrader: (5)
 
Joined: Mar 2011
Posts: 126
Likes: 0
From: Indiana
Default

Originally Posted by the_merv
What bolts came out of that block?
I'm going to look tonight, but I think its the long ones with the two shorter bolts on the ends
Reply
Old Nov 5, 2012 | 04:14 PM
  #4  
Sales1@Texas-speed's Avatar
FormerVendor
 
Joined: Jun 2011
Posts: 890
Likes: 3
Default

If it is in fact an 03 block you will need to purchase the early long and short bolt set. If 04 and newer they will be same length.
Reply
Old Nov 5, 2012 | 07:38 PM
  #5  
88Fbody6L's Avatar
Thread Starter
On The Tree
iTrader: (5)
 
Joined: Mar 2011
Posts: 126
Likes: 0
From: Indiana
Default

^You are exactly right. I have two shallow bolt holes in the block on each end
Reply
Old Nov 5, 2012 | 08:05 PM
  #6  
batboy's Avatar
11 Second Club
iTrader: (6)
 
Joined: Feb 2005
Posts: 1,309
Likes: 2
From: middle of nowhere, Kansas
Default

You need the early style bolts.
Reply
Old Nov 6, 2012 | 10:29 AM
  #7  
wildcamaro's Avatar
TECH Addict
iTrader: (15)
 
Joined: Nov 2009
Posts: 2,501
Likes: 4
From: Western PA
Default

Don't forget to make a thread chaser with one of the old long head bolts, gotta make sure those holes are clean and coolant free to obtain a good clamp when torquing head bolts down bc you don't wanna hydrolock/break one...
Reply




All times are GMT -5. The time now is 02:45 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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