Hi everyone, have a 1993 F150 extended cab I recently put leveling springs on. I used Pro Comp 2" lift springs (#24212), and the truck now sits dead level. I am having some driveability issues including wandering, a little bit of bump steer, and the steering wheel not returning to center during turning. This is after an alignment at a local shop, and some additional adjustments at home.

Here are some more details:

After the spring install i took it to an alignment shop and they got it close but said they couldn't get it perfect without drop brackets. I looked at the bushings they installed and noticed they only put in 2.75 degree bushings, so I installed 3.25 degree adjustable bushings and used their numbers to theoretically get the Camber to 0.5 degrees per side and left caster at 2.3 degrees and right Caster at 2.9 degrees. These are my calculated numbers although I havent gotten them checked by a shop.

I am thinking that the lack of positive caster is the source of most of my issues. Anyone have any input on that?

If I need more caster it seems like I could get it by doing either radius arm drop brackets or axle pivot drop brackets. Can I do one without the other? And if I can which one would everyone recommend, i.e. which is stouter. I have read (on this and other forums) of radius arm drop brackets sometimes resulting in cracked frames.

Thanks for the help.

 

installed the same springs, took it to the alignment shop, never had any issues. sounds like the shop you took it to doesnt know what there doing.

 

Do a tie rod flip or drop pitman to get rid of bump steer.

 

Yea i'm pretty sure these guys are either ignorant or just lazy. Do you happen to know what your caster wound up being after you installed the springs?

Thanks. I have heard something about the tie rod flip but need to do more research.


Anyone else have any input on doing either radius arm drop brackets or axle pivot drop brackets?