When I had the diesel springs on my truck they were only compressed about a half inch on level ground. It was always funny to me when I would jack the truck up by the frame and it would just immediately lift off the ground.

 

That explains why it bounced/rode so bad!

You were at your shocks limit sitting at ride height.

 

Because the springs were so stiff...

 

Right. When you change your springs to be longer, you need longer shocks as well.

 

The springs are not longer, they are stock springs, they are just the 8800# GVWR stock springs. I put the 8800# GVWR stock shocks on as well.

 

The 3/4 and 1 ton trucks sit 2" higher than the half ton guys, so, the springs are indeed longer. If the only lift you have is the springs, the shocks should be fine.

 

The springs are not longer. They are stiffer. I have both of them sitting in my garage right now and they are the same length but the diesel springs weigh a lot more.

 

The point I am fruitlessly trying to make is that when there is more distance between the top coil bucket and bottom coil bucket than stock, factory shocks will not cut it. Maybe it really was just the springs causing the bounce, but it sounds to me like your shocks were maxxed out at ride height.

 

They were stock springs with stock shocks. The only difference was that 8800# GVWR stock parts were used. There was no bouncing once I put the stock 8800# shocks on, the rough ride was due to the stiffness of the springs (made worse by the lightness of the V8).

Because the springs are the same length the maximum separation from the coil bucket was never changed. What was changed was the average compressed separation from the coil bucket.

 

Okay.