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Old 10-31-2012, 10:35 PM   #1
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TJ Engine Swap

I threw a rod in my 4.0 I6 (00' TJ) and I wanting to know if any AMC 4.0 will work for a swap, I know that Jeep has been using the 4.0 for a long time and if all will work whether out of a Cherokee or earlier model Wranglers?

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Old 11-01-2012, 12:43 PM   #2
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As long as it's an inline 6, you are ok. Just transfer over the heads and the rest of the bolt on stuff to the new block. Wranglers uses that motor up until 2006. Not totally sure on cherokees but I think early 90's to 2002 on those.

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Old 11-01-2012, 12:50 PM   #3
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As long as it's an inline 6, you are ok. Just transfer over the heads and the rest of the bolt on stuff to the new block. Wranglers uses that motor up until 2006. Not totally sure on cherokees but I think early 90's to 2002 on those.
this is incorrect if we consider the details.

for a 2000 TJ, you'll need a 00-06 block from a WJ or TJ. There are differences from the earlier versions...for example, the heads are different and the water pumps are different from what you have now.

I'd shoot for a 02-04 if possible. That should ensure you get a TUPY revision 0331 head, with the tapped bosses for the coil rail, and all the sensors should be the same.
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Old 11-01-2012, 12:52 PM   #4
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Quote:
Originally Posted by danhauer View Post
I threw a rod in my 4.0 I6 (00' TJ) and I wanting to know if any AMC 4.0 will work for a swap, I know that Jeep has been using the 4.0 for a long time and if all will work whether out of a Cherokee or earlier model Wranglers?
i have a 4.0 with 61k miles on it i can sell you
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Old 11-01-2012, 12:53 PM   #5
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from an 02 tj
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Old 11-01-2012, 04:29 PM   #6
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i beleive the grand cherokees have the same engine.
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98 TJ sport 4.0L I6 356,000 miles.
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Check out my 5.3 swap in progress here!
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Old 11-01-2012, 11:15 PM   #7
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Alrighty found a 4.0 out of a 91' Cherokee for dirt cheap, would it be possible to drop it in?
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Old 11-01-2012, 11:35 PM   #8
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Alrighty found a 4.0 out of a 91' Cherokee for dirt cheap, would it be possible to drop it in?
Search google. I haven't done a swap. But when I was looking up ones for my jeep, I came across that the grand Cherokees 4.0l would fit. Now, I wouldn't take my word for it. Go look it up, I'm sure many people have asked the same questions as you(:
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Check out my 5.3 swap in progress here!
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Old 11-02-2012, 02:27 AM   #9
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Check out a site called novak-adapt.com
Whole website is devoted to engine swaps.
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Old 11-02-2012, 04:33 PM   #10
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took a look at that website, I couldn't found anything to help me. the closest thing I've found to what I'm looking for is 4.0 out of 99' WJ. does anyone have advice on any conversions I will need for dropping this one in?
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Old 11-02-2012, 04:39 PM   #11
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This doesn't really answer your question, but might put you on the right path. I talked to an junkyard this past weekend, and the guy there told me for my 1998 I-6, I could swap out with 97, 98 Cherokee parts (From an I-6 as well) because apparently they were the same engines.
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Old 11-02-2012, 05:10 PM   #12
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i have a 4.0 with 61k miles on it i can sell you
I need a 4.0. How much and where bouts are you?
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Old 11-02-2012, 08:39 PM   #13
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Alrighty found a 4.0 out of a 91' Cherokee for dirt cheap, would it be possible to drop it in?
In a word, NO. Although you could do it, the easiest swap is the same vehicle, same year. The further apart you are, the more wiring mods, sensors, etc. you need to change, install, and modify.

From a pure legality aspect, the Feds want the same year or newer engine - so putting in an earlier engine causes you to fail initial inspection in any state that does smog testing. Even if that doesn't include your state, it would prohibit you from selling or registering the vehicle in a state that inspects.
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Old 11-03-2012, 05:48 AM   #14
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We had to swap my 4.0 out of my 03 tj earlier this year. The only one I could find for a decent price was out of a wj the main difference that we noticed was the water pump on the Cherokee is electric so we couldn't use the clutch fan on it. Someone on this site told me what years would work for mine. I'm not sure I'd have to go search my threads to see but there's differences from the years and model's. I can look and see if you need me to?
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Old 11-04-2012, 03:41 PM   #15
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We had to swap my 4.0 out of my 03 tj earlier this year. The only one I could find for a decent price was out of a wj the main difference that we noticed was the water pump on the Cherokee is electric so we couldn't use the clutch fan on it. Someone on this site told me what years would work for mine. I'm not sure I'd have to go search my threads to see but there's differences from the years and model's. I can look and see if you need me to?
naw i decided just to rebuild it, thanks though
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Old 11-04-2012, 07:53 PM   #16
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I had a 96 Cherokee Country, the label on the side said it was a 4.0 "High Output"
Was there a difference in the 4.0's It seemed to have more power than my 97 4.0 TJ
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Old 11-06-2012, 08:44 PM   #17
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naw i decided just to rebuild it, thanks though
No problem, good luck with it.
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Old 11-11-2012, 07:25 PM   #18
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When you pull the motor can you just disconnect the tranny from the motor or do you have to drop the tranny and transfer case also

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