Modifying upper control arms for additional caster and camber

[Hindsight]

Anyone have pics who has done this so I can see, generally, how much I need to shorten the front and back side of the upper arm? How much caster did you end up with?

Thanks in advance.

[RM1SepEx]

There is enough variation in each install that you just need to do it. I got 4 degrees of caster and did it but cutting only a couple extra threads on the right side, the left got there w/o add'l cutting. I do have aluminum STI lowers tho and they give you a bit more than std lower arms IIRC

[Hindsight]

Thanks Dan. I will give it a shot. Need to wait for my 3/4" tap and die to get here so I can clean the threads after cutting.

[Frank818]

Why wouldn't you try with... oh wait, you got steel or alu LCAs?

[Hindsight]

I have the 2006 aluminum WRX lower control arms. I did flip the lower hurricane bushing, which is supposed to add some caster, but not as much as adding a 10mm spacer between the bushing bracket and the control arm. It's just that even with flipping the bracket like I did, it puts a LOT of stress on the control arm bushings. Right now with around 3 or 3.5 degrees caster, the steering wheel almost stays put when I'm in a corner. Very little push back to center. I'm going to try to get 4.5 if possible.