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Unread 07-11-2009, 02:11 PM   #1
indianajeep
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249 to 242 swap done

96 zj, 5.2l - had 249. I swapped in a 242 from a 98 ZJ. The input shaft was a match. Front driveshaft fit perfectly. I had to shorten the rear driveshaft. The ZJ is stock in every other way - no lifts, etc. The 242 case was 1 inch longer overall, so I had the driveshaft shop cut off 1 inch. It seemed liked it still needed more room when I installed it. Has anyone else without a lift had to shorten their driveshaft, and if so, how much was it shortened?

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Unread 07-11-2009, 07:27 PM   #2
indianajeep
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bump? anyone?
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Unread 07-12-2009, 10:26 AM   #3
ratmonkey
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you should have just driven to the shop in front wheel drive and let them measure what's needed.
with no lift you probably should have lopped about 2" off of the shaft.
i'd need more than an inch at 4.5" of lift if i weren't going to a shorter transmission soon.
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Unread 07-12-2009, 10:27 PM   #4
indianajeep
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I removed the driveshaft and measured from the end of the output shaft to the middle of the rear yoke. The driveshaft now has just under 1/2 inch of travel before it bottoms out. I am going to have the shop shorten by another 3/4 of an inch. That should put it at just over 1 inch of travel before bottoming out as measured with all four on the ground.
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Unread 07-12-2009, 11:04 PM   #5
nashmd454
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when I did my swap...the shop didn't sawp out the input output shafts and therefore had to lop off 1" on the ds as well.
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