Mitsubishi Montero & Montero Sport This sport utility vehicle offers more size than the other Mitsubishi SUVs, but manages to keep a sporty look and comfortable feel, unlike many larger SUVs.

3.5 to 3.8 swap

Old 03-13-2010, 08:14 PM
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Join Date: Oct 2009
Location: Honduras, centro America
Posts: 27
Default 3.5 to 3.8 swap

How difficult is to swap a 3.8 Montero Engine in to a 03 Montero Sport with a 3.5?
I'm asking this because when my crankshaft pulley got loosed the crank bolt break causing a mayor repair.
Looking for a used crankshaft in a used part store they tall me it was easiest to put a complete engine but at the moment the only available was a 3.8, there are almost identical, just drop in job.
I did repair my original engine and is working fine?
Have somebody done this swap, are those 300 cc make some difference?
Old 03-13-2010, 10:49 PM
Senior Member
Join Date: Sep 2004
Location: Kuwait
Posts: 183

Haven't done the swap, however I would check to make sure the wiring is the same. You probably will need the 3.8L PCM as well.
Old 03-13-2010, 11:50 PM
Senior Member
Join Date: Aug 2009
Posts: 250

yea i would imagine it would be easier to do the swap on the 2001-2002 Montero (NOT SPORT), but the big speed bumpbs as mentioned on the CPU, i know the new engines are drive by wire right? no more throttle cable? please correct me if im wrong.
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