4L80 Swap Part List
#14
TECH Enthusiast
Thread Starter
iTrader: (53)
Join Date: Jul 2007
Location: Memphis, TN
Posts: 675
Likes: 0
Received 0 Likes
on
0 Posts
Ok, as far as the wiring goes, I understand I have to swap a few wires around in the main connector and add an additional VSS plug, but are they simply using the same harness from the 4L60 and making those modifications to it or is it the other way around where they are using the different trans harness for the 80 and modifying it to work with the current system?
#16
TECH Senior Member
iTrader: (10)
Join Date: Oct 2004
Location: Crystal Springs, MS
Posts: 14,068
Likes: 0
Received 2 Likes
on
2 Posts
Just swap the white and brown wire in the 20 pin connector.. Add wires for the ISS, TH400 Long yoke and trim it off 5/8" and put it on the stock DS. Very easy.
need Dipstick tube also.
need Dipstick tube also.
#17
MASS seller approved
iTrader: (3)
Join Date: Apr 2011
Location: Mukwonago, Wi
Posts: 324
Likes: 0
Received 0 Likes
on
0 Posts
I have the stock single pc shaft with a yoke I got from jake's performance. The trans was a very small amount longer but the yoke was a bit shorter and they work as if I spec'd it out that way, I have a reg cab long box so this info may not apply. I used a conversion joint at the yoke. If you have a 2 pc shaft it may be a whole different story.
#19
Admin
iTrader: (22)
Does the trimming the yoke deal only work on 2wd? I am going to have to do something with mine this winter when I do the swap. Currently I have a Driveshaft Specialist alum shaft. Obviously I don't need a th400 shaft, I just hate to have to send my driveshaft back to have it shortened.
#20
TECH Enthusiast
Thread Starter
iTrader: (53)
Join Date: Jul 2007
Location: Memphis, TN
Posts: 675
Likes: 0
Received 0 Likes
on
0 Posts
Well I guess I got screwed over on this 4L80E I got....guy said it was out it an '01, but after further research it can't be because it's missing that bolt hole at the top center of the bell housing. What should I do, use it or just re-sell it and cut my potential losses?