Wrangler Engine Swap - JeepForum.com
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post #1 of 5 Old 05-08-2002, 07:11 AM Thread Starter
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Wrangler Engine Swap

I am looking to swap the engine/tranny in my 90 Wrangler from the 4.2 Carb/auto to a 4.0/AOD combo. Does anyone know if this combo from a Grand Cherokee or any models other than a Wrangler will also fit without modification? In my search, I have found many of these engines and some trannys, but not always from Wranglers. In order to find a lower mileage engine, I have searched for 94 and newer versions.

Laz laz@newdawnweb.com

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post #2 of 5 Old 05-08-2002, 09:11 AM
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The basic drivetrains from Wrangler/Cherokees are similar/exact between 4.0s but you will need some modification if swapping from a 4.2L.

You'll need the computer, electronics, etc, for the 4.0 and some more. Good swap, if you are willing to do it.

Maybe someone else can help you with the specifics? <img border="0" title="" alt="[Wink]" src="wink.gif" />
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post #3 of 5 Old 05-08-2002, 03:41 PM Thread Starter
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Thanks for the info 4wheeler! I figured I would need the computer and anything else hanging off the engine. When you said I would need mods to swap from a 4.2, do you know if that would hold true if I am swapping the engine AND tranny? Would there be a mating problem with the Wrangler xfr case?

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post #4 of 5 Old 05-08-2002, 04:57 PM
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hey, I'm considering that swap too. I blew my 4.2 the other night. does anybody know if I can still use puegot tranny without modification?

89YJ. '97 4.0HO, 4" lift, 33" General Grabbers, Header, no cat, glasspack AR rims
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post #5 of 5 Old 05-09-2002, 12:14 AM
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i wouldn't waste my time trying to mate the puegot to anything!it would be adviseable to do the ax-15 with the 4.0...

95 yj...
who ever said putting a spool in a daily driver was a bad idea was just jealous he had not tried it first...
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