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

Line Bore=Shorter timing chain?

Thread Tools
 
Search this Thread
 
Old Oct 17, 2015 | 02:47 PM
  #1  
static low 92's Avatar
Thread Starter
TECH Regular
iTrader: (2)
 
Joined: Sep 2013
Posts: 434
Likes: 0
Default Line Bore=Shorter timing chain?

Recently started the 3rd build of my LH6 engine.

Found the line bore was off by .002. Shop I believe said would need .005 to straighten it out. They mentioned I should get shorter chain as it would now be sloppy. Block is equipped with the plastic tensioner if you will.

I have yet in my research to see #1 anyone mention something similar. #2 I haven't found a vendor selling a shorter chain online looking (haven't called anyone yet).

I currently have a JP 5623t billet double roller with very minimal miles.

Opinions?



Also on a secondary note, Looking for a decent 3.80 piston suitable for boost application. Looks like Wiesco is only one offering a nice piston but a lot more than I'd like to spend ($805)

I've looked at JE but only see 3.79 option, and also $760.

Not using a Mahle or sealed power. Any other options suggestions for a more reasonable replacement?
Reply
Old Oct 17, 2015 | 05:57 PM
  #2  
Speed Freek's Avatar
On The Tree
10 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Nov 2010
Posts: 162
Likes: 6
From: So.Cal
Default

Dont the new oversized bearings put everything back to stock axis location? That should result in everything being in the factory location.
Or am I missing something?
Reply
Old Oct 17, 2015 | 06:20 PM
  #3  
Burken01's Avatar
TECH Addict
20 Year Member
iTrader: (88)
 
Joined: Mar 2005
Posts: 2,925
Likes: 14
From: Anaheim, Ca
Default

Tensioner should keep the chain taught..

Shorter chain? First time I heard that as well
Reply
Old Oct 18, 2015 | 04:28 AM
  #4  
Gray86hatch's Avatar
TECH Addict
15 Year Member
iTrader: (83)
 
Joined: Sep 2009
Posts: 2,388
Likes: 4
From: Battle Creek Mi
Default

http://www.romacusa.com/products.html


Go to sprocket data

Tim
Reply
Old Oct 18, 2015 | 07:36 AM
  #5  
vettenuts's Avatar
TECH Senior Member
iTrader: (4)
 
Joined: Jul 2004
Posts: 8,092
Likes: 13
From: Little Rhody
Default

You can also contact Cloyes, I believe they make sets for your situation. Ask for tech support when you call.
Reply
Old Oct 18, 2015 | 09:35 AM
  #6  
JIMS SVT's Avatar
On The Tree
iTrader: (3)
 
Joined: Jun 2012
Posts: 123
Likes: 0
From: Williamsburg Ohio
Default

We did a shorter chain in my LS1 after a line bore.
Reply
Old Oct 18, 2015 | 06:57 PM
  #7  
2JZFC's Avatar
TECH Resident
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (27)
 
Joined: Sep 2008
Posts: 803
Likes: 201
From: Orlando, FL
Default

A shorter chain is usually required after a line bore, especially if material was removed from the block half of the bore. I recently had a line bore done and bought -.005 Cloyes double-roller chain for it. Unfortunately, the line bore was not done properly and I decided to abandon that block, bought a new LS2 block from Summit and no longer need the undersize chain.

Tried installing it on the new block but it was too tight for comfort. Let me know if you can use it. I can post up a pic if you want, but other than the single undersized link having a different color, it looks like any other double-roller chain.

Look here: https://ls1tech.com/forums/generatio...chain-set.html
Reply
Old Oct 19, 2015 | 07:40 AM
  #8  
static low 92's Avatar
Thread Starter
TECH Regular
iTrader: (2)
 
Joined: Sep 2013
Posts: 434
Likes: 0
Default

I wonder if the cloyes chain will fit my current JP setup.

I will have to wait until the crank goes into the block to get an accurate new Center-Center measurement. Then go from there.

Thanks for responses, has been helpful
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




All times are GMT -5. The time now is 09:59 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