GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

2" shackle vibration?

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Old Aug 16, 2006 | 01:47 AM
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Default 2" shackle vibration?

I've been reading of some people experiencing some vibrations with a 2" rear shackle drop. I was considering this, but if there is a vibration I am a little hesitant. If there is a significant vibration, is there any way to correct it?
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Old Aug 16, 2006 | 11:44 AM
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Pinion angle shims will correct it...the vibration comes from the pinion angle being changed from the drop. It's kind of hit or miss whether you'll get the vibration or not...I had a vibration prior to lowering my truck, and a leaking front diff pinion seal. After the drop, both seem to have been cured...go figure.
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Old Aug 16, 2006 | 12:11 PM
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get a 2* shim from any suspension shop (off road or street) and it will correct the problem. make sure you install it the right way too, if you put it in backwards it'll just make it worse.
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Old Aug 16, 2006 | 12:15 PM
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My 2" drop fixed my vibration!
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Old Aug 16, 2006 | 01:26 PM
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I think only ECSB trucks have the vibration problem after a 2" shackle install. Although shims would be a good idea for all trucks, it is not necessary on RCSB and RCLB trucks. My truck does not have a vibration problem.
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Old Aug 16, 2006 | 01:32 PM
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Originally Posted by SBTork
I've been reading of some people experiencing some vibrations with a 2" rear shackle drop. I was considering this, but if there is a vibration I am a little hesitant. If there is a significant vibration, is there any way to correct it?
no vibration here...i have a 2 inch shackle drop (Belltech). rides same jus lower. no vibration.
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Old Aug 16, 2006 | 04:49 PM
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Mine vibrrates only under a hard accel up to like 30mph and stops. Wierd fukking ****. I got some cheapy shims from work.
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Old Aug 17, 2006 | 01:15 AM
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good news, thanks for the info all
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