daniel nielsen
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- Joined
- October 30, 2000
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I just installed a superlift 5.5"along with the supper runner brackets. The drive shaft has all new u-joints and has been balanced, but the vibration starts at about 15 mph stops at about 25 mph ,and then starts again around 50 mph. I installed a 3 degree shim on the back springs to rotate the rearend up but the problem has not gone away. Please help.
