I have an 84' Ramcharger with 50k original miles. Just installed Rough Country 4" lift and found take off vibration and hard vibration at 50 mpr. The take off vibration was solved with 4-degree shims in rear but the high-speed vibration is still present even after the following mods:.
- new u-joints
- balanced shaft
- balanced tires
- 6-degree shims
Any help??
- new u-joints
- balanced shaft
- balanced tires
- 6-degree shims
Any help??