I am finishing up the details on my 4runner RUF swap, and I am a little concerned the caster angle isn't quite right...

Do I need to get some shims?

 

Its leaning a lil far back. Unbolt plates should be close to level to achieve a factory caster angle

 

I dont think it Looks like An issue. IMO. I dont Have a wheel off side shot of mine. This best I can show you.

 

IF I were you I'd use string, a plumb bob, level, and calculator to figure it out. As 5-7 degrees is what I've read is perferred for large tires. I believe factory is 2-3 degrees. Been a long time since I was researching this subject. Pirate4x4 faqs has information on both. From the others I've seen looks like your front hanger needs to be dropped some.

 

If you have an angle finder, see below for a quick check:
- http://www.4crawler.com/4x4/ForSale/Shims.shtml#FAQ1

You typically want the front hanger dropped close to the amount the shackle is longer than stock. On mine, I run a +3.5" shackle and have the front hanger dropped 2.5".

 

if you decide to shim, you might want to check your draglink clearance from your leaf springs at full lock before to see how much you can shim without hitting

 

our shackle angle is vertical fix that and it should help