PSA: For those replacing 4wd front shackle bushings with polyurethane, check your shackle first.

[headhunter38]

If you have 4wd and are planning to replace your front shackle bushings with polyurethane bushings, check your shackles first. Some aftermarket shackles can have a different bore diameter for the bushing that bolts to the frame. The difference can be as much as 1mm. The polyurethane bushings will spin in the shackle instead of being locked in and rotating around the pin.
My truck had Dorman 722-015 shackles. Other brands could also be affected. If you end up needing them I would try and find some oem ones from a junkyard. Luckily the shackles are the same for the 7.5L gas trucks. That is good because it widens the search. I ended up getting my oem shackles from a 7.5L truck myself.

 

[Jesus Freak]

This PSA has been brought to you by @headhunter38 , oilburners.net, and the letter "J"..... as in "dont buy Janky Junk"....


for real thats good stuff, thank you sir!!!

 

[Clb]

Tag a mod, ask to include it into the tech resource library...

 

[Olds64]

Thanks for the heads up!

 

[ROCK HARVEY]

Good to know! I’m in the middle of Dana 60 swapping my F250 and had debated buying new shackles. Glad I decided to refurbish my old ones instead!

 

[DirtyWood]

I would add a note regarding the potential for squeaks when using poly bushings. If I had it to do over again I would never have used poly bushings and would have just bought new shackles for not much more money. Rubber is quieter than poly.

 

[ROCK HARVEY]

I would add a note regarding the potential for squeaks when using poly bushings. If I had it to do over again I would never have used poly bushings and would have just bought new shackles for not much more money. Rubber is quieter than poly.

I wonder if you could drill and tap a hole in the shackle for a grease fitting. I know that’s a common feature of custom bushing setups.