Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

4l80e swap

Thread Tools
 
Search this Thread
 
Old Nov 23, 2013 | 06:05 PM
  #1  
Leviticus6432's Avatar
Thread Starter
Teching In
 
Joined: Apr 2012
Posts: 4
Likes: 0
Default 4l80e swap

So a little background, I have an 88 Toyota Pickup rockcrawler with a tbi 4.3 and a 4l80e in it. The 4l80e is currently being controlled by a homemade transmission controller that I'd like to do away with if possible. I just bought a 99 5.3 to put in the truck and got the wire harness and everything with it. It has the pcm out of the 99 silverado 1500 it came out of. After doing some research, I stumbled upon the 4l80e segment swap. I got with the guy at lt1swap.com and I believe I will have him do a mail order tune on my pcm (remove vats egr etc.) He says he can also do the segment swap. What I can't seem to find is what to do about the wiring. I know they make adapters, but I'm modifying this entire wire harness so It wouldn't make sense to use an adapter when I can just wire it the right way. I guess the big question is, do I simply figure out what pcm/vehicle he is copying the 4l80e segment and find a pinout of that pcm and wire all trans related connectors accordingly? Has nobody done a writeup on this? Thanks!
Reply
Old Nov 23, 2013 | 09:53 PM
  #2  
Leviticus6432's Avatar
Thread Starter
Teching In
 
Joined: Apr 2012
Posts: 4
Likes: 0
Default

Have I posted this in the wrong spot?
Reply
Old Nov 23, 2013 | 10:31 PM
  #3  
NOS LS1's Avatar
11 Second Club
iTrader: (3)
 
Joined: Feb 2010
Posts: 255
Likes: 0
From: The Beach
Default Plug & Play Conversion Harness

This is the Plug & Play Harness that i used to convert my 4l60e to a 4l80e transmission. My tuner had to download a TRUCK 4l80e segment file into my 1998 camaro pcm to operate my new 4l80e transmission.

This harness was a 100 percent plug & play conversion harness.
I have a 4l80e Billet lockup converter & it works perfect also.

This is the easiest & best way to control your 4l80e.

Contact one of the sales reps at pcmforless for your application.
There new site is not working correctly.

Dont try to re-wire or re- pin. You do not have to do this with the pcmforless conversion harness. The Engineers have done this for you & it works Perfect. It was worth the 130.00 for sure.

Click on the link below & call them for your application.

http://www.pcmforless.com/index.php?...tion&Itemid=47
Reply
Old Nov 24, 2013 | 11:45 AM
  #4  
Leviticus6432's Avatar
Thread Starter
Teching In
 
Joined: Apr 2012
Posts: 4
Likes: 0
Default

NOS, thanks for the reply. I have found similar products but buying one would put me over budget on my swap. I am fairly certain that the adapter simply switches a few wires for you, something easily done with a small screwdriver or the actual pin removal tool. I don't feel that pcmforless is trying to rip anyone off by any means, I just feel that I can do it myself much cheaper. (cost of the two connectors pcmforless uses in their adapter run about 100 dollars alone, so 30 bucks for labor, overhead, etc, isn't a bad deal at all) Does anyone know what year make model the segment is typically taken from to do this swap, with that information I could possibly find the ecm pin out and cross refrence the pin out I currently have. Thanks
Reply
Old Nov 25, 2013 | 08:01 PM
  #5  
Leviticus6432's Avatar
Thread Starter
Teching In
 
Joined: Apr 2012
Posts: 4
Likes: 0
Default

Hey guys, an update for you. I finally found a link that had what I needed in it. Here it is, http://www.performancetrucks.net/for...g-swap-413157/ maybe someone else can find it useful.
Reply




All times are GMT -5. The time now is 12:35 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