Specifications

93
conversion application summary (1980-86)
1980-86 JEEP CJ5 & CJ7 (Automatic Transmissions):
Between these years, Jeep used 3 different engines: from 1980-86, the 258 6 cylinder; from 1980-83, a GM 4 cylinder 151 Iron Duke
engine; and from 1983-86, an AMC 151 4 cylinder. These engines were mated to the Torqueflite 904 & 999 automatic transmissions.
A. Optional Transmissions: Vehicles equipped with the Torqueflite 904 transmission usually had a AMC 4 cylinder engine.
This transmission is marginal when used up to a V8 engine. The stock transmission can be easily replaced by using various types
of Ford or Chevy transmissions. The transmission selections include truck 4 speeds, car 4 speeds, and automatics. When changing
transmissions, most cases may require the relocation of the transfer case further back to accommodate the new transmission
length. The adapters available for your transfer case (Dana 300) are listed in the front section of this brochure.
B. Stock Transmissions: The Torqueflite 999 was usually found mated to the in-line 6 cylinder, while the 904 was mated to
the AMC 4 cylinder. If you have decided to retain your stock transmission, we offer adapters that couple these stock Torqueflites
to the Chevy V6 & V8 engines only. There are two kits designed for these transmissions; one to fit the Torqueflite when replacing
the 6 cylinder (P/N 716131), and one to fit the Torqueflite when replacing the 4 cylinder (P/N 716132). Please refer back to the
1980-86 section of the Stock Transmission & Bellhousing Adapters for the additional conversion components. The stock column
linkage can be retained, but it will require some fabrication. By installing a Chevy V8, you will lose the original column linkage pivot
point. An alternative to this stock column linkage would be a cable-operated floor mounted shifter. (NOTE: Although rare, we have
seen the Torqueflite transmission coupled to the Iron Duke 151 4 cylinder. This transmission has a Chevy bolt pattern on the
bellhousing; however, to couple this transmission to the Chevy engine requires a special torque converter. This torque converter
costs $500 and upward. We highly recommend replacing this transmission.)
C. Exhaust: There is ample room to use stock cast iron manifolds. We offer two header systems that could be used on these
conversions. For Chevy V8 conversions, P/N 717011 headers offer the exhaust system inside the frame rails, while Part No.
717038 offer exhaust systems outside of the frame rails.
D. Radiator: The stock radiator is not normally sufficient to cool the newer engine. One option is to have a custom radiator built.
We offer some custom radiators for Chevy applications. When retaining your stock automatic transmission or swapping to another
automatic, thought should be put into proper cooling for the transmission.
E. Driveshafts: On V8 engine conversions retaining the stock transmissions, the driveshafts should not require modifications.
When upgrading the vehicle with a new engine & transmission, driveline modifications should be expected.
F. Engine Location: The main limiting factor when positioning the engine is firewall clearance. On Chevy engines, it is crucial
to allow proper clearance for the distributor cap. To locate your engine (retaining the stock transmission), leave the transfer case
and transmission in the original location and assemble the adapter & engine forward from this location. When changing
transmissions, locate the engine and work towards the transfer case. Areas to keep under consideration are firewall, radiator, and
hood clearances. On some applications, additional clearance can be obtained with firewall modifications; or on Chevy blocks, using
a smaller distributor cap. When installing a new transmission & engine, most applications will require the engine to be offset 1”
to the driver’s side for front driveshaft clearance.