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

??? on lg9 6.0

Thread Tools
 
Search this Thread
 
Old Dec 17, 2008 | 11:51 AM
  #1  
wrenchhard01's Avatar
Thread Starter
Teching In
 
Joined: Dec 2008
Posts: 4
Likes: 0
From: IN
Default ??? on lg9 6.0

going to build a 4" stroked lg9 6.0 for a ump modified. My ? is how much hp can this block handle.
Reply
Old Dec 17, 2008 | 11:58 AM
  #2  
Kingc8r's Avatar
11 Second Club
15 Year Member
Liked
Loved
Community Favorite
iTrader: (21)
 
Joined: Jan 2008
Posts: 4,565
Likes: 59
From: SF Bay Area
Default

I'm sure it can take whatever you will throw at it. I would say at least 1000hp...if built correctly. If you meant left stock internals, I'm sure it will be like every other LS motor for the most part and be good to 500-500 rwhp....

I'm sure someone more knowledgeable will reply and let you know for sure
Reply
Old Dec 17, 2008 | 02:55 PM
  #3  
dankl's Avatar
TECH Regular
iTrader: (1)
 
Joined: Apr 2008
Posts: 449
Likes: 0
From: South FL
Default

LQ9 fwiw

Built properly, it'll be good for huge hp numbers. Over 1000hp...
Reply
Old Dec 17, 2008 | 03:37 PM
  #4  
Hi-Po's Avatar
TECH Enthusiast
iTrader: (4)
 
Joined: Nov 2005
Posts: 712
Likes: 0
From: Florida
Default

Iron block will probably take anything you can throw at it.
Reply
Old Dec 17, 2008 | 05:24 PM
  #5  
djsanchez2's Avatar
TECH Addict
iTrader: (14)
 
Joined: May 2005
Posts: 2,727
Likes: 0
From: Simi Valley, CA.
Default

Might wanna take a look at this. Only mods done were ls6 cam and springs/retainers & turbo kit.
STOCK LQ9 (bottomend/heads) does 825hp/875tq on 19psi
**dyno video**
http://videos.streetfire.net/video/D...ker_172501.htm
1/4 pass
http://videos.streetfire.net/video/D...9-1a56a5d023f5

Thread:
https://ls1tech.com/forums/multimedi...5hp-875tq.html
Reply
Old Dec 17, 2008 | 08:55 PM
  #6  
KCS's Avatar
KCS
Moderator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (20)
 
Joined: Mar 2005
Posts: 8,859
Likes: 323
From: Conroe, TX
Default

I'm pretty sure Kurt and W2W made over 2000hp with one, but don't expect to see that on the stock caps or without hardblok. Probably o-rings too.
Reply
Old Dec 17, 2008 | 09:46 PM
  #7  
wrenchhard01's Avatar
Thread Starter
Teching In
 
Joined: Dec 2008
Posts: 4
Likes: 0
From: IN
Default

great to here. seeing some of these advertisments of new blocks good up to 500 hp had me worried. im going to put these blocks thru 25 maybe 30 min.of hell. hoping for 650-700 hp. so i wanted to make shure i was starting with a good foundation. if anyone could think of something that i should do to the block to help it handle all this punishment i would be greatfull.
Reply
Old Dec 17, 2008 | 10:56 PM
  #8  
KCS's Avatar
KCS
Moderator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (20)
 
Joined: Mar 2005
Posts: 8,859
Likes: 323
From: Conroe, TX
Default

ARP hardware and good machine work and it should be fine. You could look into O-ringing the deck or replacing the factory powdered metal caps with some nice billet ones but it gets expensive from there.
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 06:21 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