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  • April 13, 2024, 08:44:20 AM

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Author Topic: 4.0 engine swap in 88 eagle  (Read 190 times)

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Offline Dcorbin88

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4.0 engine swap in 88 eagle
« on: March 19, 2024, 11:15:03 AM »
Hello everyone, I need some help with my 88 eagle!
I'm trying to do the 4.0 engine swap. I have the engine bolted up to the tranny and t-case, I had ro use the 4.2 flywheel and torque converter but my issue is with the motor mounts! I can't get the ones to the frame fit in properly... I know the 3rd mount to the axle I have to build myself and it's almost complete but I can't do that until I get the motor bolted into the other mounts to measure the distance that I need to fabricate my new mounts. Is there a trick I'm missing?
I also would like to use the jeep wire harness any advice on that would be helpful as well.

Offline 89 MJ

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Re: 4.0 engine swap in 88 eagle
« Reply #1 on: March 19, 2024, 12:48:01 PM »
Check this out:

Also, you will need to use the 4.0 flywheel/flexplate as the Jeep ECU gets its crank signal from the flywheel.
1986 Eagle: 258, Auto, Chrysler 8.25 rear, 3.54 gears
1989 Jeep Comanche: 4.0, AX-15, 8.8 rear, 4.10 gears
1940 Chevy PU: 350, 700R4

Online Trooper

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Re: 4.0 engine swap in 88 eagle
« Reply #2 on: March 19, 2024, 01:27:02 PM »


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