Specifications

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identifying the stock transmission (1941-79)
JEEP UNIVERSAL - AUTOMATIC TRANS:
Vehicle ID Year Application
AMC TH400 3 Speed 1976-79 CJ7 Vehicles
AMC TH400 3 Speed 1965-79 Wagoneer
IDENTIFYING THE STOCK TRANSMISSION:
Over the past 60 years, Jeep vehicles have been equipped with over 25 different transmissions. Listed in this section are the stock
1941-79 Jeep transmissions. It is difficult to identify the specific transmission by the year of the vehicle, so we will detail specific
information that applies to both the identification and application for Jeep transmission conversions.
Bellhousing adapters usually consist of an adapter plate that bolts to the stock engine bellhousing, then the stock transmission
bolts to the backside of the adapter plate. A bellhousing adapter is usually the easiest and least expensive way to go.
Since smog regulations in your state may limit you from upgrading your engine, we have also expanded our product line to include
many adapters to retain your stock engine while upgrading to a better transmission. Listed on the following pages are the stock
Jeep transmissions and the corresponding bellhousing adapters we manufacture, along with transmission upgrade adapters.
(Note: The engine blocks referenced are as follows: Chevy includes all V8s, 229 & 4.3 V6. Ford includes 289, 302, 351W. AMC includes 258,
304, 360, 401, 4.2L, 4.0L - each manufacturer group having the same block bolt pattern. The newer Chevy Generation III Vortec engines require
a few additional considerations.)
JEEP TRANSMISSIONS and BELLHOUSING ADAPTERS 1941-79:
Most of the early Jeep transmissions 1941-79, used a long transmission input shaft. We manufacture adapter plates that make
the stock Jeep transmission look just like a Chevy or Ford. This enables us to bolt a Chevy or Ford engine and stock bellhousing
to this adapter plate. With these adapter plates, we utilize a new front bearing retainer to obtain proper bellhousing alignment. On
Chevy bellhousings kits, we use a small index of 4.686”, (fot the larger index bellhousing, P/N 716078, can be added for the 5.125”
Chevy bellhousing). On Ford bellhousings, a bearing index of 4.848” is used.
T84 (1941-45) - This 3 speed transmission has a case length of 6.750”. The bellhousing bolt pattern of this transmission
is identical to the T90 bolt pattern. This transmission was used in vehicle Model numbers 441, 442, MB
and U.S. GPW 1/4 ton 4x4s. The transmission was used with Jeep 4 cylinder "L" head engines. The shifting
lever is mounted to the top of the transmission case. We do not recommend the use of this transmission
on engine conversions. We do not manufacture any adapters to retain this 3 speed.
JEEP UNIVERSAL - MANUAL TRANS:
Vehicle ID Year Application
Warner T84 3 Speed 1941-45
Warner T98A 4 Speed 1955-71
Warner T90J 3 Speed 1947-58 4WD Utility Models W/226 Engines
Warner T90C 3 Speed 1947-71 Standard on all models except CJ2A
Warner T90C 3 Speed 1947-71 CJ-2A Up to Serial #38221
Warner T90 3 Speed 1947-58 4WD Vehicles w/4 Cyl. 134 Engines
Warner T86AA 3 Speed1965-67 Standard on all V6 Engines
Warner T18A 4 Speed 1976 Optional on all Models
Warner T14A 3 Speed 1968-71 Standard on all V6 Engines
Warner T15 3 Speed 1972-75 Standard on all Models
Tremec T150 3 Speed 1976-79 Standard on all Models