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

Atk lq9

Thread Tools
 
Search this Thread
 
Old Jun 17, 2024 | 06:35 PM
  #1  
epfatboy's Avatar
Thread Starter
9 Second Club
10 Year Member
iTrader: (3)
 
Joined: Oct 2013
Posts: 595
Likes: 40
Default Atk lq9

Anyone with feedback about ATK? Looking at there OEM LQ9 short block as one of my options. Plan to call them in a day or two and thought I’d get something out here before I do.
Reply
Old Jun 17, 2024 | 10:07 PM
  #2  
jasons69chevelle's Avatar
TECH Apprentice
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2010
Posts: 370
Likes: 138
Default

I used a ATK bare block 4.03 finished bores. I wanted to assemble the engine myself. So far it’s been great.
Reply
Old Jun 18, 2024 | 06:58 AM
  #3  
epfatboy's Avatar
Thread Starter
9 Second Club
10 Year Member
iTrader: (3)
 
Joined: Oct 2013
Posts: 595
Likes: 40
Default

Thanks, ATK is one option.

I have a local shop I have used a lot but they may be slipping a bit lately so I’m looking for options.

I have a short block that needs to be cleaned up so I could go that route, just not sure about timing as well. Local shops that are still running are SLAMMED in my area.

Texas Speed is another option but I don’t think I want to forge this bottom end so they are a bit pricey for what I need/want.

ATK seemed like the only place with an OE like build which is why I’m here asking some pre-questions.




Reply
Old Jun 18, 2024 | 04:51 PM
  #4  
01CamaroSSTx's Avatar
11 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Feb 2015
Posts: 6,000
Likes: 2,286
From: Conroe, Texas
Default

Where are you located?
Reply
Old Jun 18, 2024 | 06:38 PM
  #5  
epfatboy's Avatar
Thread Starter
9 Second Club
10 Year Member
iTrader: (3)
 
Joined: Oct 2013
Posts: 595
Likes: 40
Default

New Hampshire seacoast.
Reply
Old Jun 18, 2024 | 09:41 PM
  #6  
GMRL's Avatar
TECH Enthusiast
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2005
Posts: 503
Likes: 54
From: TX
Default

I just bought one myself. .030 over flat top short block. Haven't run it yet as Im still in the process off gathering parts. Got it from Summit, free delivery to my house.
Reply
Old Jun 19, 2024 | 01:40 PM
  #7  
epfatboy's Avatar
Thread Starter
9 Second Club
10 Year Member
iTrader: (3)
 
Joined: Oct 2013
Posts: 595
Likes: 40
Default

If you don’t mind me asking

How long did it take and what made you pull the trigger? Also did you get a balance sheet?
Reply
Old Jul 10, 2024 | 10:33 AM
  #8  
Summitracing's Avatar
LS1Tech Sponsor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 2,233
Likes: 1,523
From: Ohio, Georgia, Nevada, Texas
Default

@epfatboy,

We have the ATK LQ9 short block in stock if you're still looking. There is a limited-time free shipping offer on them so you'd have the price for the short block and tax. You can get a to-the-door quote on our site before providing credit card info.
__________________


800-230-3030
www.SummitRacing.com
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
Old Jul 30, 2024 | 05:27 PM
  #9  
Furyataurus's Avatar
Teching In
 
Joined: Mar 2022
Posts: 38
Likes: 10
Default

$5K for a 408 short block with 24X reluctor, manley forged crank, rods and pistons. Throw on AFR 245cc heads and a good cam and whoa baby!!!!
Reply
Old Jul 30, 2024 | 08:34 PM
  #10  
epfatboy's Avatar
Thread Starter
9 Second Club
10 Year Member
iTrader: (3)
 
Joined: Oct 2013
Posts: 595
Likes: 40
Default

So yeah that sounds like a blast and here is where I landed…

sent the 2002 LQ9 to the machine shop

2 + weeks went by and I go for a visit, block not bored…

came home called Texas speed, forged 408 short block (sledgehammer) delivered to my door 4 working days later…

I used the 799 heads and a little bigger cam but I’ll probably buy some ported heads and swap them with the 2002 LQ9 when the machine shop calls.

And as expected the machine shop called literally a little while ago and my now 6.2 short block will be ready at the end of the week…

tempted to run 826’s on the 6.2 and port the existing 799’s for the 408.

honestly I really didn’t want the 408 but got pissed so here I am.





Reply
Old Jul 31, 2024 | 12:51 AM
  #11  
DualQuadDave's Avatar
TECH Fanatic
10 Year Member
Liked
Loved
Community Favorite
iTrader: (8)
 
Joined: Feb 2014
Posts: 1,835
Likes: 614
Default

Originally Posted by epfatboy
So yeah that sounds like a blast and here is where I landed…

sent the 2002 LQ9 to the machine shop

2 + weeks went by and I go for a visit, block not bored…

came home called Texas speed, forged 408 short block (sledgehammer) delivered to my door 4 working days later…

I used the 799 heads and a little bigger cam but I’ll probably buy some ported heads and swap them with the 2002 LQ9 when the machine shop calls.

And as expected the machine shop called literally a little while ago and my now 6.2 short block will be ready at the end of the week…

tempted to run 826’s on the 6.2 and port the existing 799’s for the 408.

honestly I really didn’t want the 408 but got pissed so here I am.

Inventory is never a bad thing these days. I would keep both and run what you consider the best for the combo. That being said, 862's are great, but on a 4.065 bore, just do something else. My cheap *** doing exactly what you are doing, I would put the 799's on the 6.2 and some TFS 220's on the 408. Winner all the way around for the $$$.
Reply
Old Jul 31, 2024 | 07:22 AM
  #12  
epfatboy's Avatar
Thread Starter
9 Second Club
10 Year Member
iTrader: (3)
 
Joined: Oct 2013
Posts: 595
Likes: 40
Default

Sorry I meant 823 heads (square port) on the 6.2 but as you said I think the 408 could use some breathing room!

i also have a 2005 4.8 set up for a turbo in the corner of the barn. The inventory I need are some rollers!

first world problems….
Reply
Old Aug 1, 2024 | 09:43 PM
  #13  
mizzac's Avatar
Teching In
 
Joined: Jul 2024
Posts: 3
Likes: 0
Default

Could always sell the 408...totally unrelated where you located lol
Reply




All times are GMT -5. The time now is 02:19 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