LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

LSX in a GP GXP fit?

Thread Tools
 
Search this Thread
 
Old Aug 29, 2008 | 12:36 AM
  #1  
williamGT's Avatar
Thread Starter
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default LSX in a GP GXP fit?

I was just wondering will a LS4 power car take a LSX block. when my car is paid off I would like to look into it.

Thanks
Reply
Old Aug 29, 2008 | 03:00 AM
  #2  
StealthV8's Avatar
TECH Resident
iTrader: (1)
 
Joined: May 2008
Posts: 763
Likes: 0
From: Ontario, Canada
Default

i think the ls4 blocks may be shorter
Reply
Old Aug 29, 2008 | 03:42 AM
  #3  
TiredGXP's Avatar
TECH Enthusiast
iTrader: (2)
 
Joined: Dec 2007
Posts: 677
Likes: 0
From: Sherwood Park, AB
Default

Originally Posted by williamGT
I was just wondering will a LS4 power car take a LSX block. when my car is paid off I would like to look into it.

Thanks
Probably not, but depending on your fabrication skills it may be possible.

Different bellhousing bolt pattern on the LSX will require an adapter to fit the transmission. This could take an inch or so of space. We have, at best, .75 inch clearance between the accessory drive and the strut tower. The LSX crank snout is another .4 of an inch longer than the LS4, so there will be issues with the accessory drive sticking out farther on the LSX.

You'd have to do some pretty careful measurements to see if the strut tower could be notched for clearance without interfering with suspension geometry.

Reply
Old Aug 29, 2008 | 04:19 AM
  #4  
williamGT's Avatar
Thread Starter
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default

Yeah our LS4 engine is 1 inch shorther than the LH6 in the 5.3L trucks. oh well 303HP is good tho.
Reply
Old Sep 1, 2008 | 12:25 AM
  #5  
avatar4886's Avatar
Teching In
 
Joined: Feb 2008
Posts: 7
Likes: 0
Default

I'm sure it can be shoehorned in because of this

http://fastfieros.com:80/projects/tomkls1/tomkls1.htm

LS6 in a 2001 grand prix GTP. Its mounted transverse to the 4t65hd
Reply
Old Sep 1, 2008 | 12:39 AM
  #6  
krazy4's Avatar
12 Second Club
iTrader: (5)
 
Joined: Mar 2006
Posts: 1,457
Likes: 3
From: Yorba Linda, CA
Default

Originally Posted by avatar4886
I'm sure it can be shoehorned in because of this

http://fastfieros.com:80/projects/tomkls1/tomkls1.htm

LS6 in a 2001 grand prix GTP. Its mounted transverse to the 4t65hd
How does that thing get any traction lol

Pretty damn cool swap.
Reply
Old Sep 1, 2008 | 12:48 AM
  #7  
williamGT's Avatar
Thread Starter
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default

Holy crap! that thing must haul ***.
Reply
Old Sep 1, 2008 | 04:04 AM
  #8  
Semper91-RS's Avatar
TECH Enthusiast
 
Joined: Jan 2008
Posts: 546
Likes: 0
From: Missouri
Default

If it ever got too much traction the entire car would flip forward.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo




All times are GMT -5. The time now is 10:00 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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