Originally Posted by olerodder
Just a couple of thoughts. Did you check the center to center distance on the old LCA's and new Boss 302 to make sure they were exactly the same.
With spherical rod ends you are going to transfer the slightest amount of NVH through the body/frame directly to the LCA's and directly to and from the rear end.
Have you checked the balance on you wheels or the run-out of the wheels and or axle.
When you say over 100mph, does the vibration continue or do you go through it at a higher speed.
Have you ever checked the pinion/trans/two piece drive shaft angles.
Just a note; spherical rod ends are great for race cars but for street cars they are just not practical..................IMHO
Yeah the distance is the same I checked it after install. My wheels should be balanced they never gave me the issue before but I am putting on new wheels this week so that shouldn't be a factor. The vibration continues to get worse and worse the faster I go. How would I check the angles on the pinion/trans/driveshaft?