Issues with 1 in Peak Lift Blocks w/ 1.5 in Deaver Leaf Springs

[steelhaze]

Did you get the pinion shim? It could be that your hearing your drive shaft bind up, because it is no longer in alignment.

Thinking about this here, the thump only occurs when going over speed bumps and things like that, not when rolling over it, but when the tire makes contact with the road again. If that makes any sense. It occurs at a very specific point of going over a speed bumps lol and its a pain in the ass to explain.

The drive shaft would be moving back down at that point in its travel

 

[AXE]

I'm not sure what to tell you, as youve got a lot of parts installed that may not be design3d to work together.

If you jack the truck up underneath the reciever hitch and see what it does when the suspsion extends, that will give you some idea what might be happening as the axel rotates below the leaf and how the drive shaft slides. Then drop it fast and see whatbit does. The problem is you're not replicating what's really happening with forward momentum and thousands of pounds of weight.