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Author Topic: NP 231 4 or 6 cylinder  (Read 969 times)

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Offline Mudpig97

  • Budget Lift
  • Posts: 157
NP 231 4 or 6 cylinder
« on: January 11, 2008, 02:44:17 PM »
Okay I have a np 231 t/case from a 4 cyl (21 spline) for sale.  There seems to be no takers so I'm thinking of changing the mainshaft to a 6 cyl(23 spline).  If I get a donor shaft is this a direct swap or will I need something else also(bearings,seals etc.)?
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85 CJ7, toy axles and 35's, miller locker in rear.

Offline cLAY

  • Talks waaay too much!
  • Posts: 2377
Re: NP 231 4 or 6 cylinder
« Reply #1 on: January 12, 2008, 10:33:56 AM »
Read here, NP231 into a ZJ, basic theory should apply to other Jeeps:

http://www.mallcrawlin.com/forum//showthread.php?t=2781
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'93 ZJ, 5.2L, lifted/locked/36s..<gone>
'98 5.9er 4.10s,locked,LA,WJ knuckles
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