Bob's Resource Website (2007)

(Transmission Info)


Transmission Conversion data....General Info

T700-R4 adjustment data experience

T700-R4 assembly / info

GM Turbo Hydra-matic transmission brief ID course:
T - Turbo Hydra-matic (THM)
T200 - No separate tailhousing, light duty 3-speed T200-4R - No separate tailhousing, 4-speed overdrive (.67:1), no modulator
T350 - Four bolt tailhousing, 3-speed, vacuum modulator at rear of case
T400 - Six bolt tailhousing, super duty 3-speed, vacuum modulator near filler tube
T400R4 - Six bolt tailhousing, super duty 3-speed with overdrive, vacuum modulator. Used in Trucks
T700-R4 - Four bolt tailhousing, 4-speed overdrive (.7:1), no modulator, AKA T700, 4L60 (not Corvette)
4L60 - Non-Electronic version of 700R4 ( late 80's - early 90's, Camaro & Corvette) 4L60E - Electric shift version of T700, must have a computer to operate
4L80E - Six bolt tailhousing, super duty 4-speed (.75:1), no speedo, computer required. Actually an electronic T400R4.

These pages and programming contained therin are © 1996 - , Bob Johnstone and may not be reproduced without the permission of rfjohnstone at (Bob Johnstone) All Rights Reserved.
Some technical opinions are my own from experience, other informational data is from online sources with credits when available and while care has been taken to be as accurate as possible, it is offered only as a guide and caution should be exercised in the application of it.