LQ4 or LQ9

Reply Subscribe

Thread Tools

Search this Thread

Apr 23, 2010 | 11:33 PM

99beaSSt

Thread Starter

Staging Lane

iTrader: (1)

Joined: Apr 2006

Posts: 60

Likes: 0

From: Ohio

LQ4 or LQ9

I have a 6.0L iron block out of a 01 chevy truck, got it dissasemabled, found out it has 317 heads but i cant for the life of me figure out if its a LQ4/LQ9. I called around but no luck, how can i tell?

Apr 24, 2010 | 12:32 AM

StrokerAce03

TECH Addict

iTrader: (7)

Joined: Feb 2005

Posts: 2,840

Likes: 0

From: Georgia

If it has dished pistons it's an LQ4; LQ9's had flat tops and beefier rods for that year. Most likely it would be an LQ4 since it came out of a truck.

Apr 24, 2010 | 12:36 AM

99beaSSt

Thread Starter

Staging Lane

iTrader: (1)

Joined: Apr 2006

Posts: 60

Likes: 0

From: Ohio

Im pretty sure when i took it all apart it had flattops in it but ill check again, thanks for the speedy reply.

Apr 24, 2010 | 12:38 AM

1BAD_LS1 Tunes

FormerVendor

iTrader: (8)

Joined: Apr 2010

Posts: 290

Likes: 0

Quote:

Originally Posted by StrokerAce03

If it has dished pistons it's an LQ4; LQ9's had flat tops and beefier rods for that year. Most likely it would be an LQ4 since it came out of a truck.

Yep this is correct... look at the pistons, easiest way to tell!

Apr 24, 2010 | 06:54 AM

SweetS10V8

12 Second Club

iTrader: (4)

Joined: Jun 2004

Posts: 2,580

Likes: 3

From: Michigan

Unless it was a Silverado SS or Escalade, its going to be an LQ4

Apr 24, 2010 | 10:05 AM

GMCtrk

TECH Senior Member

iTrader: (23)

Joined: Jul 2004

Posts: 9,853

Likes: 0

From: Houston, TX

There was no 01 LQ9. Production began with the 02 model year.

Apr 24, 2010 | 10:17 PM

99beaSSt

Thread Starter

Staging Lane

iTrader: (1)

Joined: Apr 2006

Posts: 60

Likes: 0

From: Ohio

Quote:

Originally Posted by GMCtrk

There was no 01 LQ9. Production began with the 02 model year.

Good to know thanks, can you tell me what the difference is in the two?

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

Brett Foote

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Verdad Gallardo

Apr 24, 2010 | 10:37 PM

99beaSSt

Thread Starter

Staging Lane

iTrader: (1)

Joined: Apr 2006

Posts: 60

Likes: 0

From: Ohio

Quote:

Originally Posted by bww3588

what are you talking about?

I know there both 6.0L and the pistons are different. Is there anything thing else that makes a LQ4 different from an LQ9?

Apr 24, 2010 | 11:17 PM

#10

Octavain

Staging Lane

iTrader: (5)

Joined: Jan 2010

Posts: 63

Likes: 0

From: TN

Quote:

Originally Posted by GMCtrk

There was no 01 LQ9. Production began with the 02 model year.

What he said! LQ9 was introducced in 2002 and put into Cadillac SUV/EXT, that year. They started to put them in Silverado SS in 2004.

Apr 24, 2010 | 11:27 PM

#11

87silverbullet

TECH Veteran

iTrader: (11)

Joined: Mar 2007

Posts: 4,873

Likes: 8

From: Slidell,LA

There is also something about the length of the crank out of the back of the motor in some of the earlier lq4's. I can't remember what years so if somebody remembers please chime in.

Apr 25, 2010 | 12:26 PM

#12

bww3588

12 Second Club

iTrader: (49)

Joined: Sep 2005

Posts: 8,139

Likes: 10

From: Chillicothe/Lima, Ohio

Quote:

Originally Posted by 87silverbullet

There is also something about the length of the crank out of the back of the motor in some of the earlier lq4's. I can't remember what years so if somebody remembers please chime in.

99 and 00 had a longer crank to mate up to the 4L80E transmission. in 01 they started using the shorter LS1 style crank with a spacer.

Apr 25, 2010 | 09:18 PM

#13

Avengeance

12 Second Club

iTrader: (4)

Joined: Aug 2003

Posts: 1,618

Likes: 0

From: NorCal

I just ordered a 6.0L crank from GM... the solid "truck" crank. I wonder if Ill have any issues bolting up my flexplate/converter.

Reply Subscribe

LQ4 or LQ9

LQ4 or LQ9

Trending Topics

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever