Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

6.0L harness

Thread Tools
 
Search this Thread
 
Old Aug 10, 2005 | 10:33 AM
  #1  
FastKat's Avatar
Thread Starter
TECH Addict
iTrader: (10)
 
Joined: May 2005
Posts: 2,487
Likes: 2
From: Pittsburgh, PA
Default 6.0L harness

Will a 6.0L wiring harness and ECM from a 2003 2500 Chevy Van w/4L80E work with an aluminum block engine from a late model Firebird or Camaro?

How about the opposite? Will a harness from a late model Carmaro or Firebird control a 4L80E trans without an adapter? I know about the Speartech adapter but don't want to spend the cash if I already have the parts to get the job done. I am planning to run a 5.7L aluminum block engine with a 4L80E trans and am trying to figure out how I am going to wire it... and if it can be done with a stock harness and stock ECM alone.

Thanks, -Dave
Reply
Old Aug 10, 2005 | 12:03 PM
  #2  
Brandon Boomhauer's Avatar
TECH Senior Member
iTrader: (10)
 
Joined: Nov 2001
Posts: 8,766
Likes: 0
From: Gainesville, Denton TX
Default

The Fbody harness will not control the 80e as far as I know, the adaptor would be your best bet on that setup.
I know Parish8 used that, or somethign similar to get the 80e to work in his 1500 truck.

Or you can get ahold of Painless and see what they can do for that setup, I'd imagine they have something, or could get you something working.
Reply
Old Aug 10, 2005 | 03:17 PM
  #3  
FastKat's Avatar
Thread Starter
TECH Addict
iTrader: (10)
 
Joined: May 2005
Posts: 2,487
Likes: 2
From: Pittsburgh, PA
Default

Cool... can I use the truck harness and computer with the 4L80E and an aluminum block 5.7L out of a late model Firebird or Camaro??

Originally Posted by Brandon
The Fbody harness will not control the 80e as far as I know, the adaptor would be your best bet on that setup.
I know Parish8 used that, or somethign similar to get the 80e to work in his 1500 truck.

Or you can get ahold of Painless and see what they can do for that setup, I'd imagine they have something, or could get you something working.
Reply
Old Aug 11, 2005 | 12:15 AM
  #4  
01WS6/tamu's Avatar
TECH Senior Member
20 Year Member
iTrader: (37)
 
Joined: Oct 2004
Posts: 5,121
Likes: 74
From: somewhere in TX
Default

Yes it will be fine the harness and pcm are oblivious to what engine they are installed on. the 6.0, 5.7, 4.8 are more or less the same. Just think of them as old school 350's and 305 and you will be ok. The 5.7 will run fine with 6.0 programming if you are short on funds to have it re-programmed. But you will have to program out the passlock for the engine to start.
Reply
Old Aug 11, 2005 | 04:48 PM
  #5  
Speed Scene Wiring's Avatar
Teching In
 
Joined: Aug 2005
Posts: 44
Likes: 0
From: San Antonio
Default Recalibration

If you need the computer recalibration, I can do that for you, so you can run as true to the application as possible. Remove anti-theft, correct gear and tire and trans operation. 200.00
Reply




All times are GMT -5. The time now is 04:43 AM.

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