what caster angle with adjustable uca for lift

[Forrrrest]

I'm thinking about going with some light racing ucas and wondering what people are setting their caster angle at with a lift?
I've also heard of some people pushing their caster as far forward as possible to help with clearance of 35's. what degree are guys you running it at? I believe 4 degrees would be a sweet spot.

I'm at .9 left and 1.0 right maxed out. I can not get any more positive caster out of my excentrics. I have 3" eibachs up front and the back sits 1 n 3/4" higher so that has even more of an effect on my caster issue.

I will be adding 35's as well soon. So help with what caster angle to run with 3" springs and 35's would be a great help. The more tire clearance the better, hopefully that will get the tire more off of the fire wall.

Thanks in advance for the knowledge fellas

 

[Skidmarcx]

I'm running 1.5 degrees using the UCAs for the adjustment and leaving the LCA cams pointing downward... Keeps the tire tucked in enough for clearance and still provides good drive ability... All depends on how much trimming/beating you've done

 

[Forrrrest]

if i remember correctly 1.5 is the very low side of "with in factory spec"

 

[white_n_slow]

Yes 1.5* is barely within spec. In my experience with leaf-sprung vehicles, 4* is the best number to shoot for for good on-highway stability. I'm too cheap to get aftermarket UCA's so 1.5* is about the best I can do.

 

[smkd13]

I am currently set to "D" on my LR UCAs and have around 3.5 for my cast. It also pushes the tire forward slightly which helps. My rear adjustment is almost all the way out and the front is about half way in the adjustments. If your going 35s and push the camber on the LRs all the way out your going to need to trim your fender

 

[Forrrrest]

Luckily I have an alignment rack at work so I will be able to play with caster and camber. I'm wondering if anyone has found the sweet spot for caster I've read tons of articles but most seem to be about tacos. Im going to try with 4 degrees and see how that works out. I'm not scared to cut pound and weld what I have to Make those 35's clear. But as always the less work the better!

 

[EatonKyleH]

Luckily I have an alignment rack at work so I will be able to play with caster and camber. I'm wondering if anyone has found the sweet spot for caster I've read tons of articles but most seem to be about tacos. Im going to try with 4 degrees and see how that works out. I'm not scared to cut pound and weld what I have to Make those 35's clear. But as always the less work the better!

I just set up some Light Racing UCA's for a member TCMach on here and set them to 4 degrees caster. So far I've heard he is really liking it. Maybe he will chime in here.

 

[Forrrrest]

[MENTION=82211]TCMach[/MENTION] how are you liking the LR ucas? What degree was shown on your alignment print out. Also what tire size are you running?

 

[TCMach]

[MENTION=82211]TCMach[/MENTION] how are you liking the LR ucas? What degree was shown on your alignment print out. Also what tire size are you running?

They're awesome! With all the caster I have now the truck feels much more stable. The steering is less darty especially at highway speeds. For reference before the new UCAs my caster was 0.2*L and 0.9*R.

This is the new alignment sheet. The top is where I set the camber and caster with the UCAs at the D setting. They're now set at C and that yielded the current numbers. With my tires 285/75r16s on 4" BS wheels I do not rub anymore. I rubbed at a certain steering angle, in reverse, only at some times right when I got it back on the rear pinchweld but somehow I had gotten away with never messing with that before. A couple hammer taps fixed that and I didn't even take the tire off.

<iframe src="https://www.flickr.com/photos/102663750@N03/12278582944/player/06aa1ed9cd" height="640" width="460" frameborder="0" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe>