I put them on the highest setting. According to my tape I got 1.9 inches of lift. I still have a little more than an inch of rake, which is what I wanted.
I have not put but maybe 20 miles on it. Been in company car all week . But I can tell you that it is a different truck. With the 8 speed it is not a dog when taking off and the truck has a firm, planted stance when driving. My computer is saying that I avg 14.6 mpg since putting these on. I will be taking it on a little road trip this weekend and will try to report back on mpg's. If I had a do over I would not change a thing so far.
I have read this forum at nausea for the past three months!! I just installed the 5100's front and rear on a 2016 Sierra Z71 4x4 and put 295/55/20 Nitto Trail Grappler's on it (these tires spec out at 33x12.50). On an incline at full lock the tire will rub the sway bar very slightly. Full lock on level ground it does not rub.