This adapter plate assembly is used to adapt a GM Engine to the Jeep T-18 / T-98 4 speed manual transmission. The adapter plate is 1.812" in length and is manufactured from 356-T6 heat treated aluminum alloy. Included in the adapter plate kit you will receive an adapter plate, pilot bushing, gasket, seal, fastening hardware, and adapter instructions.
- Chevy/GM Small Block V8
- Chevy/GM 4.3L V6
- Buick 225 & 231 V6
Note: This adapter plate kit only fits T-18 / T-98 transmission with a input shaft stick out of 13”-14”
Note: With our adapter plates, we utilize a new front bearing retainer to obtain proper bell housing alignment. Chevy adapter plates we use a small index of 4.686”, if your bell housing utilizes the larger 5.125 index diameter you will also require PN716078 .
Note: This adapter plate kit works exclusively with the original Jeep T-18 / T-98 adapter housing. This adapter housing is approx 5” in length.
The T-18 is a heavy duty four speed with unsynchronized first gear. These transmissions were manufactured by Borg Warner and they have a cast iron case. The casting number on the drivers side of the T-18 is T-18 or 13-01. The T-18 has a 1 1/8" 10 spline input shaft and a 1 3/8" 6 spline output.
The T-98 has a very similar appearance to the T-18 except a casting number of T98. It is heavy duty like the T-18. The T-98 has a 1 1/16" 10 spline input shaft and 1 3/8" 6 spline output.