4.0L into 2.8L engine swap - JeepForum.com
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post #1 of 6 Old 03-19-2017, 07:52 PM Thread Starter
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4.0L into 2.8L engine swap

The frame of my '96 Cherokee Classic got totaled, but the engine, transmission, computer, everything else is fine. I want to take the engine (4.0L straight 6) and whatever else I need out of it to put in my '84 Wagoneer, which has a 2.8L V6, because it doesn't run that great and the Cherokee ran like a champ. I'm not really sure what all needs to be moved over, and what modifications need to be made for this Frankenstein to work out. Any advise or references would be helpful.

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post #2 of 6 Old 03-19-2017, 08:49 PM
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Moved to the XJ section.


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post #3 of 6 Old 03-20-2017, 11:37 AM
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My advice is to not try this swap unless you have the necessary skills and tools. You would need to remove and replace all the engine bay and dashboard wire harnesses, the entire dashboard assembly and heater box, make physical changes to the fuel system, and make physical changes to the engine bay sheet metal and firewall sheet metal.


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post #4 of 6 Old 03-22-2017, 12:26 PM
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This would be a labor of love no doubt.


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post #5 of 6 Old 03-23-2017, 12:20 AM
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If you've got the time I say go for it! Most of my projects are labors of love. It all comes down to how much time and money you want to invest.

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post #6 of 6 Old 03-23-2017, 01:40 PM
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Jeep had to modify a lot when they switched from the 2.8 to the 4.0 including the firewall itself. If I was in your position, I'd sell what I could of the 96, sell the 4.0, sell the 2.8 (if there even is anyone who'd buy such a thing) and get a Buick 3800 for the 84.

I assume you're talking about an 84 XJ Wagoneer and not an SJ since SJ's never had the 2.8 V6 (lol, but can you image how awful that would have been?).

Build Thread -- http://www.jeepforum.com/forum/f177/whats-chrokeese-build-thread-2525690/
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