Rear shackle bushings diameter

[Gunfighter1]

Im going to be swapping out my sagging rear springs on my 86 m1009 soon and want to swap the shackle bushings as well. Looking at the prothane bushings they have 2 sizes 1 3/8, and 1 1/2. Does anyone know what size they are for our trucks?

 

[cucvrus]

I have seen both sizes. If you are referring to the shackle to frame bracket. Most i replaced were 1 3/8". I hope that helps you. And the front sway bar is 1 1/4". Use the energy suspension parts. In my experience they are the easiest and best to install. While you are at it do the front springs and motor mounts. Why not do a good job the first time. I have had great trouble changing the body mounts on several units. So If it is not broken i am nit fixing them. The rubber will have to stay.

 

[Gunfighter1]

Thanks for the imput. I have newer 2 in lift springs i put on a few years ago and a 2 in block in the rear. Didnt replace the front frame/shackle bushings tho i did it on the cheap instead of doing it right. Since i will have the rear springs out im going to do the rear shackle bushings to.