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4.5" lift installed, binding issues

Old Sep 1, 2019 | 11:09 PM
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Default 4.5" lift installed, binding issues

Finally got my 4.5" hybrid OME lift installed and like I sort of expected, I've got some major rear driveline issues. The ears on the tail shaft for the transfer case and the yoke on the driveshaft are touching so I assume I'm going to need a SYE correct? Is there anything else I could be missing, or should I be looking at slip yoke eliminator parts, and if so, does anyone have any recommendations? My brother has a Hack-N-Tap he hasn't installed yet, but would it be better to get and actual kit with driveshaft?

Some pictures for posterity's sake my new 33" tires



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Old Sep 2, 2019 | 06:52 AM
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The hack n tap with a front driveshaft is fine to use.
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Old Sep 2, 2019 | 07:48 AM
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SYE and some shims for the rear springs too probably
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Old Sep 2, 2019 | 03:25 PM
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These are all the angles so far, a local guy was saying I might need a tranny drop, but I've read those can cause motor mounts to fail prematurely. Is this correct, and what would you do? Thanks in advance

Overall driveline angles

Transfer case tailshaft, this is binding. Seems to have alot of the slip yoke out as well

Rear axle angle

Last edited by 1Bolt; Sep 2, 2019 at 06:21 PM.
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Old Sep 2, 2019 | 04:33 PM
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You need a SY for it, and some shims for the rear springs.

SYE will fix the top, shims will fix the bottom
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Old Sep 2, 2019 | 05:39 PM
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Yikes that's some gnarly angle. As said above a SYE for sure. I'd wait on shims though till you get the sye and new shaft in and see what it looks like
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Old Sep 2, 2019 | 06:26 PM
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Awesome, thanks for the info guys. I'll get a Hack n Tap on it's way and go about scrounging up a front driveshaft to rebuild. Once that's in, I should at least be able to drive the thing and go about measuring for shims to get the angle correct.
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Old Sep 2, 2019 | 08:47 PM
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A 1" transfer case drop may get you by for a little bit but an SYE is the proper way to fix it. From the pictures the angle on the axle side doesn't look too bad, the pinion will tilt up slightly when you accelerate so having a little bit of angle on that end is ok.
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Old Sep 2, 2019 | 09:13 PM
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Originally Posted by 00t444e
A 1" transfer case drop may get you by for a little bit but an SYE is the proper way to fix it. From the pictures the angle on the axle side doesn't look too bad, the pinion will tilt up slightly when you accelerate so having a little bit of angle on that end is ok.
If I go with the double cardan driveshaft my rear pinion is supposed to be pointed right at the transfer case, or pretty close, correct? I ordered the Hack and Tap tonight, so I think once I get that in my angles should be pretty close to spot on, or at least close enough I can measure for shims and still drive it.
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