Specifications

1986 CJ7 Chevy V8 Conversion. Photo
& installation data provided by Howard
McCreary of Albuquerque, NM.
82
SR4, T4 & T5 - Found in Jeep models CJ5, CJ7 & Scramblers, these transmissions can be identified by an overall
(1980-86) case length of 15.187”. These transmissions were used with the AMC 258 6 cylinder, AMC
150 4 cylinder, and the GM 151 Iron Duke 4 cylinder. The SR4 models were only used in
1980-81, while the T4 & T5 models were used from 1982-86. When
replacing the stock 4 cylinder or in-line 6 cylinder engine with either
a V8 or V6, you should be able to leave the transfer case
and transmission in their original location. This may vary
depending on various models. The strength of these
transmissions is marginal for use with V8 engines.
The adapter between the main case and transfer case is 5-7/8". The input shaft has a
stickout length of 7-1/16", and a pilot tip diameter of .590", which is identical to all Chevy
transmissions. The input shafts on these transmissions are normally 1-1/8” 10 spline; however, in some 1986 applications we
have found a 1”-14 spline. These applications will require a special clutch disc, Part No. 716104.
When converting to these transmissions, we offer two options. We manufacture a full bellhousing that
will bolt directly to the Chevy engine and accept the Jeep transmission. This bellhousing uses all of
the original Jeep clutch linkage with only minor modifications. This bellhousing can also be equipped
with a hydraulic slave cylinder off of a 151 Iron Duke engine (P/N 716331). The new bellhousing
will incorporate the original Jeep clutch release lever, release bearing, return spring, ball pivot, and
release arm boot. When replacing an AMC 4 cylinder and using the 712548 bellhousing, you will need
to purchase a few additional items; Part No. 716332 T/O arm boot, P/N 716333 internal return
spring, P/N 716334 clutch release arm, and P/N 716331 slave cylinder kit.
When replacing the Iron Duke, no adapter is required. Vehicles equipped with this engine will not require an adapter plate for
adapting to a new Chevy engine. The original Jeep bellhousing has the same bolt pattern as the Chevy V8. This bellhousing is
limited to a 153 tooth flywheel and a 10-1/2" maximum clutch size. The original Jeep flywheel cannot be retained. The original slave
cylinder can be used with your new Chevy clutch. The clutch must be a short release type, P/N CF360056. The original clutch
linkage and release bearing can be retained without modifications. The interior of the bellhousing will need to have 3 areas ground
for additional flywheel and clutch clearance. The new V8 can be installed without driveshaft modifications. P/N 22-0003 Hi torque
starter without a nose cone is also needed.
Using the full bellhousing kit with the SR4, T4 & T5:
Chevy Engine to SR4, T4 & T5 Buick V6 Engine to SR4, T4 & T5
712548 Bellhousing Kit 712583 Bellhousing Kit
713007 Motor Mounts 713011 Motor Mounts
Optional Items for full bellhousing:
716639 Clutch Linkage (Chain) **716639 Clutch Linkage (Chain)
*716334 Jeep Release Arm **CF360056 10-1/2” P.P.
716176 GM Release Arm **383271 10-1/2” Clutch Disc
*716332 Bellhousing boot **CF700010 Flywheel (231 V6)
CF165552 11” P.P. N1714 Release Bearing
383735 11” Clutch Disc
716311 Release Bearing (w/ 716334)
N1714 Release Bearing (w/ 716176)
*716333 Release Arm Spring
716331 Slave Cylinder Kit
(If vehicle was previously equipped with mechanical linkage, a Jeep
master cylinder is necessary)
*These components are necessary when replacing the AMC 4
cylinder.
identifying the stock transmission (1980-86)