Thread: K-2500 six hole
View Single Post
Old 05-23-2019, 02:07 PM   #5
cashforclunkers
Registered User
 
cashforclunkers's Avatar
 
Join Date: Apr 2016
Location: Orrington, ME
Posts: 156
Re: K-2500 six hole

Quote:
Originally Posted by 95 S_Trucker View Post
There never was a 4l80e that wasn't electronic. The 4l80e replaced the th400 in 1991. The only 4 speed auto before 91 was the 700r4.
Sorry I thought there was. I guess I would have run into one by now if that were the case. I'll edit my post so I don't misinform.

This must be why I was confused: (from wikipedia)

For 1987, GM changed the nomenclature of their Turbo Hydramatic transmissions — the THM400 was renamed to the '3L80' (three forward speeds, longitudinal positioning, and an arbitrary 'strength' of 80, the second highest such rating assigned). The 3L80HD was introduced in 1987 as the HD unit used in passenger trucks. In 1991, a four-speed overdrive version, the 4L80-E, replaced the THM400 in Chevrolet/GMC pickups, vans, SUVs, and commercial vehicles.
__________________
Joel

71' K10 stepside build
70'/04' GMC Crew cab project build
Bunch of parts for sale
Burb parts for sale

Last edited by cashforclunkers; 05-23-2019 at 02:13 PM.
cashforclunkers is offline   Reply With Quote