RCX lift vibration issue.

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Astro

I'm Awesome
Joined
Oct 9, 2022
Messages
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Location
Texas
Hey all, did the 4" RCX lift on my 96 k1500 and now have vibration that SEEMS to be coming from the front passenger side. It's only at above 55mph and at about 1/4 throttle. Like if I accelerate, it vibrates at quarter throttle, and when I go above 1/4 it becomes smooth again until I drop down to 1/4. If I let off the throttle completely, it's smooth.

Doesn't really make sense to me lol.

I went down there and inspected everything and there's nothing glaringly obvious. Nothing rubbing, nothing moving around. Axles seem solid, no in\out or side to side movement.

The angles seem normal. No rubbing on the u-joints of the driveshaft either.

Has anyone experienced this?
 

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