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

4-6 drop vibe at highway speeds

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Old Jul 17, 2007 | 10:29 PM
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From: Montgomery, AL
Default 4-6 drop vibe at highway speeds

I have my truck dropped 4-6 and I thought that the vibe was coming from the tires. I have since got new wheels and know now that it isn't I read before what it was and the pinion angle was set perfectly. What else could it be? Thanks
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Old Jul 17, 2007 | 10:34 PM
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From: Austin,TX Name:Mark
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is it around 50-65 mph? If so then it's not just your truck. A ton of people have that problem. I've had the vibration thought a 2" rear drop, a 2/4, and now a 5/7. There isn't really a fix to it.
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Old Jul 17, 2007 | 10:36 PM
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That is what I was thinking. I never had it when my truck was dropped 2 in the rear but now that it is 4-6 I notice it. It kind of sucks
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Old Jul 17, 2007 | 10:58 PM
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Mine vibrates but i know it's a shim problem. Just freakin annoying to pull the crap apart and try differant shims over and over again each time.
Kinda a 45min job each time that i dread so i have put off racing for at least 6 months unless i get the every so often...f it feeling and HAVE to run someone lol.
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Old Jul 18, 2007 | 01:17 AM
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I had it before, after changing the brake pads and Rotors the vibe went away....
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Old Jul 18, 2007 | 10:53 AM
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when I did my 2/4 I did the back with Hotchkis 4" Lowering Leaf Pack With Special Carrier Bearing Bracket, Transmission Spacer, Shims And Polyurethane Bump Stops Are Included With Each Spring Set. #2403. and never had a problem been up to 130mph no problem
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Old Jul 18, 2007 | 03:22 PM
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Originally Posted by skyhighsami
That is what I was thinking. I never had it when my truck was dropped 2 in the rear but now that it is 4-6 I notice it. It kind of sucks
Is it a 1-piece or 2-piece driveshaft? Did you do the carrier bearing relocator?
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