Results 1 to 11 of 11

Thread: need help with 93 c3500 454/4l80e conversion

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1

  2. #2
    Electronic Ignition!
    Join Date
    Feb 2020
    Posts
    11
    c5wagner,
    thank you very much for your help. I think I understand what I have to do to get my Dad's truck running now!
    Off to the wrecking ard to find correct ecm.....

  3. #3
    Fuel Injected!
    Join Date
    Aug 2012
    Posts
    386
    I think you would be wise to try to get 94/95 pcm that is closest to what ever vehicle the 95 4l80e came from. That way the transmission will be happier and the motor is the easy part of the swap. You can tune on the motor side and if you are off it runs crappy, if things are off on the trans side you could ruin the trans.
    6395, BHDF, 7.4 BBC lightly modded now 6395 BMHM back to BHDF

  4. #4
    Electronic Ignition!
    Join Date
    Feb 2020
    Posts
    11
    Last question....does the ecm determine trans or memcal?

  5. #5
    Fuel Injected!
    Join Date
    Aug 2012
    Posts
    386
    The computer is pcm, power control module ( I think I used the right wording ) and it controls both the engine and the trans. The chip needs to be correct for both the engine and the trans. When people burn a new chip they are mostly working with the eng side although some of the deeper guys do work with trans. When you go looking for new pcm make sure to get the mating harness ends ( red,blue ) as they are different than what you have with your 7060. If it seems like a lot of work changing to 7427 it is well worth it in the long run.
    6395, BHDF, 7.4 BBC lightly modded now 6395 BMHM back to BHDF

Similar Threads

  1. 1991 C2500 4L80e to 1995 4l80e swap (7427 ECU swap)
    By TheScaryOne in forum GM EFI Systems
    Replies: 3
    Last Post: 09-01-2019, 01:57 PM
  2. 89 c3500 xdf?
    By BigBanks78 in forum GM EFI Systems
    Replies: 9
    Last Post: 09-23-2018, 08:09 AM
  3. 4l80 swap into 454TBI C3500 2WD
    By Markmx6 in forum GM EFI Systems
    Replies: 7
    Last Post: 05-17-2015, 09:22 PM
  4. Gonna be parting out a C3500 soon, need advise
    By JeepsAndGuns in forum Gear Heads
    Replies: 14
    Last Post: 05-26-2014, 02:19 AM
  5. 1995 4L80E vs 1998 4L80E ~ Using a '427 PMC $OE/$31
    By dave w in forum GM EFI Systems
    Replies: 17
    Last Post: 03-19-2013, 02:36 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •