pyrobee Posted December 5, 2010 Share Posted December 5, 2010 I am new to MJ and I have a 1990 MJ pioneer 4wd LWB I am trying to figure out which transfer case I have. oh and its a 4.0 Quote Link to comment Share on other sites More sharing options...
Pete M Posted December 5, 2010 Share Posted December 5, 2010 NP 231 Quote Link to comment Share on other sites More sharing options...
pyrobee Posted December 5, 2010 Author Share Posted December 5, 2010 Thanks. I did not know if it could be one or the other. thank you for clearing that up for me. Quote Link to comment Share on other sites More sharing options...
Pete M Posted December 5, 2010 Share Posted December 5, 2010 86 MJs would have the 207. all others should have the 231, although there are 2 different spline counts on the input shaft depending on the year and engine. Quote Link to comment Share on other sites More sharing options...
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