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4.7 engine swap

Old 03-29-2019, 05:30 PM
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Default 4.7 engine swap

Working on a friend's 2005 grand Cherokee 4.7 bad motor. Going this weekend to pick up used engine. My choices are this 03 dakota, 04 dakota, and 06 dakota. I believe dakota changed to 32 tone ring mid 2002. The 03 dakota has least miles but the 06 dakota is closer to me. Am I right thinking those motors will drop right in as long as they have the same 32 teeth tone ring?
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Old 03-29-2019, 05:36 PM
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I believe the newer 4.7s had revisions to fix the oil starvation to the head issues . Might check that !
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Old 03-29-2019, 05:46 PM
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Also they upped the horsepower in 02 I think. In 08 they went to dual spark plugs and upped he hp again to 310
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Old 03-29-2019, 05:52 PM
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Originally Posted by GreaseMonkey17 View Post
I believe the newer 4.7s had revisions to fix the oil starvation to the head issues . Might check that !
That's an internal revision right? All engines run good. The 03 lower miles should work with the 2005 pcm and sensors as well as the 2006 right?
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Old 03-29-2019, 07:37 PM
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Going to go with the 06 dakota 4.7. According to my knowledge the dakota 4.7 didn't change until 2008?
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Old 03-29-2019, 10:46 PM
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From my quick search I believe any of the 3 would be the better engines with revisions . The later ones evidently had the “HO” intakes and made more power . Go with the one maintained the best !
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Old 03-31-2019, 05:55 PM
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Went with the 2004 dakota engine. Took about 2 hours to pull.

Awaiting transplant, the fun starts next weekend when I will begin removal of bad motor.
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Old 03-31-2019, 06:42 PM
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Pulled after about 2 hours
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