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TJ Front Axle Assembly

Old 08-10-2018, 06:50 PM
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Default TJ Front Axle Assembly

Will it bolt right into an XJ? I have read that the TJ Dana 44 is a good upgrade for an XJ. But how many mods are required?
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Old 08-10-2018, 11:45 PM
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None, it will bolt right in except the U joint may be a larger size, Spicer 1330 as opposed to our 1310. Change the yoke and that will take care of it
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Old 08-11-2018, 07:59 AM
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Thanks!
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Old 08-15-2018, 09:00 PM
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Originally Posted by 4.3L XJ View Post
None, it will bolt right in except the U joint may be a larger size, Spicer 1330 as opposed to our 1310. Change the yoke and that will take care of it
After more reading... it appears that the Dana 44 from the TJs is a bastardized version. From an article about the Regular TJ vs the Rubicon “Then let's talk axles. The Dana 44s are really more like Dana 39s. They don't have the 1/2-ton strength that a Dana 44 should have. The front axle shares more parts with a Dana 30 than a Dana 44...”

Looks like my dream of a Dana 44 front axle is squashed!
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Old 08-15-2018, 09:18 PM
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That is correct. They have D44 pumpkin and D30 tubes which are adequate for an XJ. The larger pumpkin was added because the selectable locker front and rear places tremendous pressure on the gears and 30 spline axles would be standard
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Old 08-15-2018, 09:35 PM
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Plus the Dana 44 has a larger gearset so you can run lower gears without the pinion being to small. Ever seen the size of a 4.88 pinion for a Dana 30, it's about the same size as the shaft. If you want to run 4.88 or lower gears then the Dana 44 would be worth it in my opinion. If you stick with 4.56 or higher then I would keep the Dana 30.
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