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General Forums => The Mess Hall => Topic started by: lanulos89 on April 17, 2006, 08:24:16 PM

Title: auto tranny
Post by: lanulos89 on April 17, 2006, 08:24:16 PM

Any one ever hear of a swap out a 3 speed yj auto trans, with a 4 speed tj auto trans.  I kno that the tj is computer conrolled but i wondered if its possible b/c my buddy has a tj trans sitting in his backyard.  Any ideas? i'd a ppreciate any ideas.

Title: auto tranny
Post by: Jeffy on April 17, 2006, 08:28:50 PM

The problem will be the engine bellhousing bolt pattern.  You have a 2.5L with a 60* GM bellhousing bolt pattern.  If it's from a TJ, I believe it will be a 42RH.  They were used with the 4.0L and 2.4L but not the 2.5L, if I remember right.  I know Spence would know but he's MIA.

Title: auto tranny
Post by: sbspence on April 18, 2006, 12:08:49 PM

Jeffy's right...and besided the old tried and true 3cog 727 deriviative behind the 2.5 is a much better unit imvho!