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Old 05-20-2013, 10:57 AM   #1
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My yj is done for

Well the motor on my 2.5 is blown. Instead of replacing or rebuilding it, I decided to put in a 4.0. I know this type of question is asked a lot around here, but I am wondering if all the jeep 4.0 engines are the same. I have a 1995 and I'm looking at engines from 1990s grand Cherokees. Will that work with my jeep? Also if I can get a Cherokee 4.0, will I need a new tranny and t case? I know I'll need the harness and computer. Thanks in advance for any info and advice

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Old 05-20-2013, 11:10 AM   #2
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ENgine should work and you might need the adapter for the t case and tranny.

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Old 05-20-2013, 11:37 AM   #3
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So you think it's gonna be cheaper and still workable to just get the adapter rather than put in a used ax15 and t case?
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Old 05-20-2013, 12:10 PM   #4
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Quote:
Originally Posted by Willybusmc View Post
So you think it's gonna be cheaper and still workable to just get the adapter rather than put in a used ax15 and t case?
personally, i would say no.
the ax5 is a very light duty transmission. not to mention, off the top f my head, i cant think of a single company that provides an adaptor plate to bolt a 4.0 to an ax5. the aftermarket industry has pretty much agreed that the ax5 just isnt up to par for anything other than the 2.5

depending on where you get your engine, etc, it will probably be cheaper to just pull the transmission and transfer case with it, then getting a custom adaptor plate made.
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Old 05-20-2013, 12:21 PM   #5
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I looked at advanced adapters, your right, they don't make the adapters I'm looking for. I plan on going to the pull-a-part near me and getting and engine, trans and t case from a 90s Cherokee.
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