The T-90 is a 3 speed transmission with a casting number of T90 and
a 1 1/8" 10 spline input shaft. Length of input shaft varies with
application. Output is 1 3/8" 6 spline. The T-90s used in 1945 and
some of 1946 where column shift. Later versions were floor shift like
in the picture.
Usage
The T-90 was used in CJs from 1945 to 1971. It was also the
standard 3 speed in the Willys Wagon, Willys Pickup, M38, M38A1, FC
trucks, and Jeepster/Commandos during this time period. The only
variation are the T-86 and T-14 used behind Jeeps equipped with the
"Dauntless" Buick V6.
| Transmission |
1st |
2nd |
3rd |
4th |
5th |
Rev |
| T-90A1 (CJ, 1946-1962) |
2.98 |
1.66 |
1.00 |
|
|
N/A |
| T-90C (CJ, 1963-1971) |
3.44 |
1.85 |
1.00 |
|
|
N/A |
| T-90J (Truck 6 cyl., 1952-1965) |
2.98 |
1.66 |
1.00 |
|
|
N/A |
Side view of T-90 transmission. Drivers side view of T-90 with
Chevy adapter. This adapter is the factory adapter that was used
with the T-86 and Dauntless Buick 225 V6 engine. Most likely, the
transmission is a T-90 case that has been rebuilt with T-86
internals. Many parts interchange between the transmissions.
Side
view of T-90 transmission.
Front view of T-90 transmission.
Top
view of T-90 transmission. This T-90 is out of a '50 CJ-3A. This
is a typical aftermarket Chevy adapter. This adapter and the
adapter above bolt to standard bell housings used in Chevy, Olds,
Buick, Pontiac, etc. The bell housings used in these vehicles is
the same on the transmission side.
