[nickqw14]

I finally sent it on a thuren kit a few weeks back. 2.25 coils, Fox 2.0 remote Res shocks front and rear, adjustable track bar. Before this I had a 2 inch spacer with the same wheels and tires. The truck now sits almost 1 full inch higher in the front then the rear which I thought was unusual. The alignment process has been a nightmare. First alignment 2.3 and 2.7 caster cause the tech decided to add both sides together to get me close the 3.8-4.2 recommend range. Second alignment 3.3 and 3.4. Went to a new shop and finally got me at 3.8 and 3.7. Toe has been fine 0.00-0.05. I noticed after the second alignment when at a dead stop if I turn my wheels either way it gets extremely hard to turn at the last 15-20% of movement. If I am in drive with foot on the break I can only turn the wheels about 1/4 of a turn before it gets extremely hard. Emailed thuren and they said because of my negative offset wheels it could be impacting the steering and might need to pull the caster back. I just don’t wanna mess with the caster again now that it’s finally driving straight. Anybody else ran into something like this?

 

[chris26262]

Ow man. I am right there with ya... for the most part. I’ve got the 2.25 coils up front and king shocks all around. I too have the nose high issue and have since ordered the 1.75” coils. (Waiting for those to arrive on Friday this week)
As far as alignment goes... I’ve been to countless shops trying to get it to be with in thurens specs. And to have the steering wheel straight!!!! God help me the steering wheel! It’s not been possible to adjust the drag link to the point where it’s straight! I’ll adjust it. Then tighten the jam but. Then the steering wheels off again! It’s madness because I’m running stock tires and just done a little suspension level. I’ve got and adjustable track bar... so steering geometry should all be good.. no?
So yea. I am there with ya. It’s been a few months now of working at it. I’ll see if these new “shorter” springs will help out anyway.
It shouldn’t be this hard on a 2017 3500 CTD.

Good luck!

 

[3/4ton_of_fun]

I’ve got to say this is exactly what the consumer gets when “they know what they want” and finally get it. Maybe the first clueless alignment guy was doing you a solid without setting your caster to the desired specs, he just didn’t know how to articulate why.

Did it drive terrible after the first alignment? If so then adding a bit more caster may help, it may also diminish the ability to turn your front wheels.

As you increase caster, and turn you begin to lift the weight of the truck as the outside of the wheels push down. Add to this wider wheels, wheel spacers, or high offset wheels and now the leverage is diminished.

 

[VtechNSX]

Interested to see what size wheels and offset the OP has. My guess is 20 at -22, or more. Without additional info it’s hard to gauge direction on where to assist further.

 

[dillonjm]

To answer the question, no. I am running 2.25 Thuren springs and ran 37’s for a long time with no issues. It drove great.

 

[Smokebyyou]

I run Thuren’s 2.75 front and 1 inch in the back, king 2.5 all the way around. Truck sits perfect, still an inch higher in the back. I eyeballed my toe, just looked down the side of the tire to the rear tire, adjusted the caster myself, centered my steering wheel. Truck drives perfect. Solid axle alinement isn’t rocket science.

 

[nuljas23]

Interested to see what size wheels and offset the OP has. My guess is 20 at -22, or more. Without additional info it’s hard to gauge direction on where to assist further.

His sig says -24 fuels

 

[Redheadhunter21]

Personally I would forget about caster numbers and get it to where it drives nice, sounds like you have it to tight and need to loosen it up some. I have a 2500 but my drivers side is one line to the rear and the passenger is just shy of 2 IIRC