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Advance Adapter
The 700R automatic transmission adapter to the Jeep New Process 231 is 1.50" in length. The adapter material is 356 T6 heat treated aluminum alloy and has a provision for a transmission mount. The adapter kit includes an adapter housing, new 700R4 output shaft, upgraded NP231 (23 spline) input gear, bearing, snap rings, o-ring, seal, gasket, fastening hardware and adapter instructions.
Transfer Case
The adapter assembly will fit the Jeep NP231 transfer case with a 21spline input shaft. Introduced in 1988, the Jeep NP231 is a part-time transfer case became the standard for XJ and YJ models. It was also used in six cylinder ZJ models through 1995. Chain driven with a 2.72:1 low range, it's reliable even with more than stock horsepower applied.
Transmission
This kit is designed for exclusive use with our new main shaft that fits the 700R-4 / 4L60 manufactured thru 1996. The overall case length of the transmission is 23.375", has a non-removable bell housing, and a 4 bolt square rear case. Late model 4L60E automatics will have a removable bell housing and a 6 bolt hex pattern rear case. The late model automatic will require an additional Advance Adapter to work with this kit (50-0405).
Notes:
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