[Diy_efi] 4L80E Questions

grey thorn greythorn3 at hotmail.com
Fri Nov 29 19:47:45 GMT 2002


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<P>well there has to be a pcm that supports the 6.0, i had a pcm that was already from my engine so it worked great i just had them change the tranny part in the pcm.</P>
<P>Ray T</P>
<P>AZ</P>
<P>&gt;From: "Programmer" <NWESTER at EIDNET.ORG></P></DIV>
<DIV></DIV>&gt;Reply-To: diy_efi at diy-efi.org 
<DIV></DIV>&gt;To: <DIY_EFI at DIY-EFI.ORG>
<DIV></DIV>&gt;Subject: Re: [Diy_efi] 4L80E Questions 
<DIV></DIV>&gt;Date: Fri, 29 Nov 2002 08:30:36 -0700 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;It's not quite that simple, Ray. First off, GM never made a 6.0L in 1998. If you flash a newer calibration into that older PCM, the car won't even start. 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Lyndon. 
<DIV></DIV>&gt; ----- Original Message ----- 
<DIV></DIV>&gt; From: grey thorn 
<DIV></DIV>&gt; To: diy_efi at diy-efi.org 
<DIV></DIV>&gt; Sent: Thursday, November 28, 2002 11:00 PM 
<DIV></DIV>&gt; Subject: Re: [Diy_efi] 4L80E Questions 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; you need to add a couple wires to go to the 4l80e input speed sensor to your PCM and send your PCM to a place in minnesota called diagnostichotline.com they do it for 75$ you will need to provide them with a VIN to a truck that has your ENGINE SIZE and the TRANNY your putting in your truck, i did it to my 1997 k1500 with a 4l60e, i went and put the 2000 Chevy 4l80e in it. i found out what teminals i needed to put wires on by comparing the wiring schematic of the PCM at the library on the mitchell manuals computers, let me know if you cant get them and i can email them to you when i get back home from vacation. 
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<DIV></DIV>&gt; Ray T 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; Arizona 
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<DIV></DIV>&gt; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; &gt;From: "Programmer" 
<DIV></DIV>&gt; &gt;Reply-To: diy_efi at diy-efi.org 
<DIV></DIV>&gt; &gt;To: 
<DIV></DIV>&gt; &gt;Subject: Re: [Diy_efi] 4L80E Questions 
<DIV></DIV>&gt; &gt;Date: Thu, 28 Nov 2002 08:17:56 -0700 
<DIV></DIV>&gt; &gt; 
<DIV></DIV>&gt; &gt;You could use a 1999-2002 PCM from a 6.0L equipped truck with 4L80E trans and retune from there. Let me know if you need some help...sounds like a wild project. 
<DIV></DIV>&gt; &gt; 
<DIV></DIV>&gt; &gt;Lyndon 
<DIV></DIV>&gt; &gt;www.ecmprogrammer.com 
<DIV></DIV>&gt; &gt; 
<DIV></DIV>&gt; &gt; ----- Original Message ----- 
<DIV></DIV>&gt; &gt; From: D White 
<DIV></DIV>&gt; &gt; To: diy_efi at diy-efi.org 
<DIV></DIV>&gt; &gt; Sent: Wednesday, November 27, 2002 5:11 PM 
<DIV></DIV>&gt; &gt; Subject: [Diy_efi] 4L80E Questions 
<DIV></DIV>&gt; &gt; 
<DIV></DIV>&gt; &gt; 
<DIV></DIV>&gt; &gt; Hello All, This is my first post, I have a 2001 4L80E that is in great shape, but we are going to build it up anyways to handle more power. I am going to install this in my '98 Trans Am in place of my 6 speed manual that is in it now, I have reservations about the 6 speed holding up to 800 hp/trq from my twin turbo 400 cu in(6.0L iron block based) LS1 motor, I have a couple of options to make this work and need some help. Option #1) I do have a TCM and wiring harness from a 92 Chevy Diesel - SRVC # 16147609 w/ matching wiring harness - I don't have a clue who could nail the chip burn on this for me and modify the harness to only use what I need, so if anyone knows who can do all this let me know. Option #2 Not the most refined but for sure the easiest way is to put a manual valve body in it and shift it manually but I would lose the lock up feature and might not be as streetable when off the race track. Option #3 Sell this TCM and harness and buy an aftermarket TCI trans controller, the only down side is the higher $$, so let me know what you think I'de welcome all suggestions and input, Thanks Dave 
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