Upgrade truck suspension

jimh425 wrote:
Seems like OP has left the building.

I don’t believe porpoising is insurmountable unless you continue to use the same approaches that didn’t work. There just aren’t that many parts.

While it is true there are not that many parts, if the harmonic that sets up is not caused by or controlled by the parts that are realistically swapable, it is a tough go.

I have researched threads on this topic that go back at least a decade and noted some folks who replaced part after part with at best limited success. I need to make a video what we have the camper on the back and the porpoising starts. It is not just a motion. The truck literally sounds like it is going to tear itself apart and dropping down to about 40 mph is the only thing that seems to work. This is after a the second set of shocks, Super springs, and a Hellwig sway bar.

I purchased Torklift uppers, but after receiving them and noting if I installed them my overloads would be engaged even when empty, I called Torklift to discuss the situation and ended up returning them. I now have fabbed my own uppers, but with the weather have yet to try them out.

I wish there was a simple solution, but I think it is more elusive than it may appear to be. However, the problem is not constant or even frequent, the vast majority of the time, it is a nonissue on our combo.

Do you have a suggestion of what you think will work? :)

Steve