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Old 01-17-2012, 12:42 PM
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Engine Compatibility

I have a 99 Jeep GC and I am trying to find out what years are compatible with it. I have been getting alot of mixed answers by going to different websites/forums. Basically, I have been reading that the 99 is the only motor that will go back into a 99. I am trying to avoid having to rebuild if there are others available in my area.....only problem......NO 99's! ARG! Anyone out there that can help or give suggestions? It would be much appreciated!
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Old 01-17-2012, 12:58 PM
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Re: Engine Compatibility

Which Engine the 4.0 or 4.7?
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OK, fine...I'll admit...some amber lamps are good, and necessary.
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Old 01-17-2012, 01:02 PM
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Re: Engine Compatibility

Do you have the 4.7 motor? If so what you are looking for is anything up to 2004 that isn't a 16tone. Usually if you look, most wrecking yards specify 16t or 32t on the 4.7. Also stay away from HO engines as they are not compatible. If you go to car-parts.com you'll find their website helpful in locating engine. Your going to find though that even used these engines are not cheap. If you go online to ebay there is a company in Arizona that is doing a rebuild fro around $1300.00 Hope this was helpful. Sorry that is a 16t
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Old 01-17-2012, 01:08 PM
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Re: Engine Compatibility

I have a 4.0.
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Old 01-17-2012, 01:44 PM
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Re: Engine Compatibility

To be safe stay '99 to '02 and you should be fine.The 4.0 doesn't have a separate tcm so I don't know if anything changed in '03 as did the V8s.
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