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

Locals dont port and polish here??

Thread Tools
 
Search this Thread
 
Old Mar 11, 2010 | 01:52 PM
  #1  
SigmaX6's Avatar
Thread Starter
Launching!
 
Joined: Sep 2008
Posts: 238
Likes: 0
From: Canada
Default Locals dont port and polish here??

Looked into getting a port and polished TB done. But unfortunately none of the local shops do it here.

I was thinking about doing it myself but i lack the skills haha. Read some online faqs for ls1 porting.

Anywhere online I could just order 1 then send back my core as a trade?

Friend did a Ls4 swap on is Cobalt and it made it undriveable without a re-tuning.

I had a port in my old car and it was a blast to drive.
Reply
Old Mar 11, 2010 | 02:17 PM
  #2  
Bryan921SS's Avatar
TECH Enthusiast
 
Joined: Jun 2008
Posts: 621
Likes: 1
From: Zeeland, MI
Default

Fasterproms will do it for you, but you wont see much of an improvement
Reply
Old Mar 12, 2010 | 12:55 AM
  #3  
SigmaX6's Avatar
Thread Starter
Launching!
 
Joined: Sep 2008
Posts: 238
Likes: 0
From: Canada
Default

Yeah I know I won't see anything past 5hp. But I'm doing it mostly because of the easy install. Will contact fasterproms and see if they have any ls4 cores for my gxp. Thnks
Reply
Old Mar 13, 2010 | 02:19 PM
  #4  
smokin06impala ss's Avatar
TECH Enthusiast
iTrader: (2)
 
Joined: May 2009
Posts: 733
Likes: 0
From: Mission,Tx
Default

Im considering doing it to my impy but would it cause any problems in the future? anyone?
Reply
Old Mar 13, 2010 | 02:31 PM
  #5  
williamGT's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default

I wanna see pics of the V8 cobalt.
Reply
Old Mar 13, 2010 | 02:53 PM
  #6  
neilownz's Avatar
TECH Fanatic
 
Joined: May 2008
Posts: 1,769
Likes: 0
From: Fargo, ND
Default

LS4 cobalt lol.
Reply
Old Mar 13, 2010 | 03:44 PM
  #7  
707chance's Avatar
TECH Apprentice
iTrader: (2)
 
Joined: Jun 2009
Posts: 334
Likes: 0
From: Fredericksburg Va.
Default

I purchased a ported intake and tb from fasterproms. The tb set off codes and I ended up returning it. Dan and Jeremy, from fasterproms, both say that a ported tb will not increase horsepower just throttle response.
Reply
Old Mar 13, 2010 | 04:01 PM
  #8  
neilownz's Avatar
TECH Fanatic
 
Joined: May 2008
Posts: 1,769
Likes: 0
From: Fargo, ND
Default

I think he means using a LS4 tb on a cobalt. Sadly not a V8 swap.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-1

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

 Verdad Gallardo
story-2

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

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-5

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-6

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-7

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

 Verdad Gallardo
story-8

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-9

10 Camaros You Should Never Buy

 




All times are GMT -5. The time now is 04:21 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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