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2/4 Belltech drop causing slight vibration

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Old 03-14-2019, 10:46 AM
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Originally Posted by Howell


thank you. I think I may pull the shims, and see if that helps or makes it worse.
Just measure the working angle and get the appropriate shims. Just guessing and doing what others have done probably isn't the best approach. What works for someone else with the same drop might not necessarily work for yours since these trucks all seem to vary slightly.

Truck looks great though!
Old 03-14-2019, 03:05 PM
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Originally Posted by Screwed05
Did you verify the pinion angle before and after the drop? You should be with in 1* +/- the factory spec.
i didn’t not take measurements before, I didn’t realize that this vibration problem existed with several trucks.
Old 03-14-2019, 03:15 PM
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Also make sure your shins are facing the correct way
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Old 03-14-2019, 07:23 PM
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Originally Posted by Sainte
Also make sure your shins are facing the correct way
thick part facing forward to make it tilt upward


Last edited by Howell; 03-14-2019 at 07:27 PM.
Old 03-14-2019, 08:01 PM
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Originally Posted by Howell





thick part facing forward to make it tilt upward

Just by looking at the pic that maybe the problem. The pinion looks too far up. I'd put an angle finder on it. The pinion should be 2*- 4* down. I had to readjust my pinion angle due to a vibration at about 60mph. Now there are no vibrations till after triple digits.
Old 03-14-2019, 08:16 PM
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Originally Posted by Screwed05
Just by looking at the pic that maybe the problem. The pinion looks too far up. I'd put an angle finder on it. The pinion should be 2*- 4* down. I had to readjust my pinion angle due to a vibration at about 60mph. Now there are no vibrations till after triple digits.
I agree. The pinion flange looks almost looks to be at the same plane as the driveshaft....it maybe just the angle of the pic, but I would also pull the shims.
Old 03-15-2019, 08:17 AM
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Originally Posted by crankinaway
I agree. The pinion flange looks almost looks to be at the same plane as the driveshaft....it maybe just the angle of the pic, but I would also pull the shims.
Where is the best place to measure the angle?

But it yeah I am planning to pull the shims and see if that helps or makes things worse.
Old 03-16-2019, 12:55 PM
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Here is a video that should give you the gist of it. And a couple pics of alternate points to measure from.










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