1972 Suburban 4X4 3/4 Ton K20 "The Beast"

[Richard]

Originally Posted by nsiti

Richard, thank you

We are also concerned about the shackle flip angle, so I reached out to Offroad Design, where the kit was purchased from. Kyle over there responded as follows:

Regarding the weight sitting on the springs, there is a body but it more or less is a bare shell at the moment. It makes sense that your shackles are sitting at a forward angle, our springs are much more reactive to weight than a standard lift kit springs and a set of springs for a Suburban are built heavier to start with to compensate for the addition body weight. Once the truck is full assembled the springs will flatten out and correct the shackle angle.

Nevertheless, this remains a concern for us and we agree this needs to be addressed before hitting the road. I really appreciate your comment and wonder what you think of ORD's response? What angle would you consider safe, and do you have suggestions for us to consider in case their theory is not correct?

Regards,
Nick

Would bet if you hit the shackle up with a hammer (dead blow if you have one) with the truck weight on spring it will swing up to the frame. If you hit it down it might swing back. As it sits the spring is bound up and in use the shackle will want to swing the wrong way. The shackle needs to be in path of rear swing at full droop to prevent inversion. Hope that makes sense.