Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

Sign in to follow this  
Instructor31

Rough Country 3.5 Knuckle Lift Kit

Recommended Posts

Good evening,

 

Here’s my 2 cents on the Rough Country 3.5 Knuckle Lift Kit on my 2017 Silverado 1500 Z71. I’ve been driving on it for the past 20k miles and haven’t had an issue. The ride quality is nice, nothing out of the ordinary. I did not option to change the front shocks , just the rear ones. 

 

The lift kit was very easy to install. Key things to watch out for are the front differential drop spacers, they are the most difficult thing to get in place. Also, I’ve seen on other forums that people have been leaving the front diff cooling fins in “thinking” that it won’t need to get cut because it “doesn’t make contact with the cross member.” Yeah.. BS, I thought the same but the cooling find do actually touch the cross member, so make sure to cut them off to avoid miss alignment of your CV axel with your front diff.

 

Rear blocks and shocks are straight forward, make sure you place the blocks on the correct way with the taper or “ skinny “ end to the front. Measure them out to find that smaller side. 

If not you will get shaking while you break at about 25mph and under due to the drive shaft and rear diff universal joints not being at the required angles.

 

the kit does require a 1/4” spacer for stock wheel, get it, if not you will be rubbing on your upper control arm. 

 

The included Knuckle addresses the upper control arm and CV axel angles. They’re not at an extreme angle, they look like stock angles if not damn near it. I have disassembled my whole suspension again to check the ware on the ball joints and they are still looking good and do not hear any popping sounds from the suspension, or abywhere else for that matter.

 

If you’re looking at getting your truck lifted and don’t want to break the bank and get some ground clearance, I think this is a very nice option.

https://imgur.com/gallery/5O8DW1V

 

 

Edited by Instructor31
  • Like 2

Share this post


Link to post
Share on other sites

Looks good and this is a kit I am very interested in getting..what size tire did you go with? Did the 1/4 spacer keep all 4 tires in the same track or do the fronts stuck way out like you see with alot of the chevys? You say ride quality nothing out of the ordinary how does it compare to stock?  Does your truck sag much when towing?  

 

Share this post


Link to post
Share on other sites
47 minutes ago, Tleesmith14 said:

Looks good and this is a kit I am very interested in getting..what size tire did you go with? Did the 1/4 spacer keep all 4 tires in the same track or do the fronts stuck way out like you see with alot of the chevys? You say ride quality nothing out of the ordinary how does it compare to stock?  Does your truck sag much when towing?  

 

I went with a 285/60/20R. The 1/4 spacer was mostly for clearance since I kept stock wheels. Track is still stock looking, even with the “oversized” tires, I’m still flush with the fenders. It’s been a while since stock but if it means anything, it’s still as smooth, it’s not too rough or stiff. A little depending on load. I chose this kit because I still tow and didn’t want to lose all functionality (torque for the most part).

 

Share this post


Link to post
Share on other sites

I just had this 3.5” knuckle kit put on as well. Rides good, looks awesome. 

 

One issue im researching is if anyone who did this has noticed increased noise or front diff activation when driving in “auto.” The shop that did my install said they are checking with RC engineers, but I haven’t heard back yet. Any thoughts if you have this kit? 

3FA3B126-1205-4375-ADB3-10C269666CCE.jpeg

  • Like 1

Share this post


Link to post
Share on other sites
On 2019-01-29 at 10:36 PM, virtualron1976 said:

I just had this 3.5” knuckle kit put on as well. Rides good, looks awesome. 

 

One issue im researching is if anyone who did this has noticed increased noise or front diff activation when driving in “auto.” The shop that did my install said they are checking with RC engineers, but I haven’t heard back yet. Any thoughts if you have this kit? 

3FA3B126-1205-4375-ADB3-10C269666CCE.jpeg

any updates on how these lifts are performing?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.