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Old 01-01-2015, 06:13 PM   #32
Willowrun
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Join Date: Mar 2013
Location: Ann Arbor, MI
Posts: 1,022
Re: Had to buy - '77 Suburban

I want the Jimmy low but not so low as to cause other problems such as the rear pumpkin hitting the bed floor. Flip kits seem to be the way to go but after doing a lot of research it seemed like most K5 owners that had done flips complained about being too low after the flip. Once I took some measurements between the axle and the frame in stock configuration it was apparent that it would in fact be sitting close to the frame with a flip.
My initial thought was to remove the factory lift block (shown below) and the overload spring to see what that would do. It only dropped it an inch statically and sagging/axle wrap over time would be a concern also so that wasn't going to work. I contemplated some lowering shackles but I still didn't think that would be low enough and I don't feel like messing with the filler neck interference that occurs on Jimmy/Blazers.
After more research I found a few posts by lolife99 stating that people had used a flip and then installed 4x4 rear spring hangers to lift the back end back up a little. That sounded interesting to me and would allow me to use lowering shackles without filler neck interference if I needed to go a little lower. Surprisingly, I found some on ebay at a reasonable price as I didn't not want to have to remove these at a junkyard (there would be plenty of time for rivet grinding/chiseling in my future). Comparison between 2wd (left) and 4wd (right) hangers. Looks like a 3" difference in shackle hole height.
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