It is my understanding the AW4 used by Jeep was from 1987-1999 with a change in spline (21 to 23) about 1992.

That tranny is basically an A340 used by Toyota from 1990 - 2005. The Jeep version had a control module to combine 1st and 2nd gear which made it a 3speed tranny. Toyota applications were 4speed.

Novak and Advance Adapters may have additional info about adapters necessary for specific engines.


John Stewart
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