is it possible to change by just getting the nut loose and sliding the arm forward?let me rephrase that.i did this about ten years ago and did i just get lucky that something didnt come loose and whack me?i think i lifted the truck just a little when i did it.

 

I replaced the rear radius arm bushings on my 78 2wd this weekend. Following a recommendation found on this board, I removed the radius arm bracket from the frame rail. 3 bolts must be removed and the rivet must be ground off, and replaced with a grade 8 bolt during reassembly. The radius arm bolt should be loosened before the bracket is unbolted from the frame. I was able to do each side in less than an hour. It would probably go quicker if you are uninterupted.