Rear pinion angle check

TJim

TJim

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Supporting Member
Joined
Dec 23, 2019
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Location
Athens, Greece
Hey everyone,

Is my rear pinion angle bad? Let me know.

I have some slight vibrations after a 2.5" lift. Mostly around 15-30 mph. When accelerating in those speeds too. Nothing at higher speeds.

Check the photos:

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IMG_7660.jpg
 
transfer case output angle needs to match the pinion input angle. That way they will cancel each other out when it spins. Not as good a SYE but it worked for me with a 3.5" suspension and 1" body lift. You will need adjustable rear control arms to do it, at least the lowers anyway.
 
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The best way to be certain is with an angle finder. I'm guessing the vibes showed up directly following the new lift?
 
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Reactions: Ephry73
If the vibes are a direct result of your new ride height, chances are you need to adjust the pinion slightly. Check the angles to be sure.

My 2.5" lift resulted in zero vibes. But I had previously installed a MML in preparation.
 
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