Rear block question

poopster · Jun 22, 2023

Rear block question

2022 AT4 w/factory lift and I added the Ready Lift leveling kit and the Bilstein 5100 adjustable shocks in the front but now the front sits 1” higher than the rear. I’m installing the Bilstein 5100 shocks in the rear which won’t give me anymore height, so I’m thinking I need to replace the blocks in the rear but I’m not sure what to do. Do I replace the entire block or just add a 1” block on top of the OEM block? All I want is 1"-1.25".

I’d like to know what I need before I take it apart.

Any suggestions or help would be greatly appreciated.

poopster · Jun 22, 2023

poopster said:
Rear block question

2022 AT4 w/factory lift and I added the Ready Lift leveling kit and the Bilstein 5100 adjustable shocks in the front but now the front sits 1” higher than the rear. I’m installing the Bilstein 5100 shocks in the rear which won’t give me anymore height, so I’m thinking I need to replace the blocks in the rear but I’m not sure what to do. Do I replace the entire block or just add a 1” block on top of the OEM block? All I want is 1"-1.25".

I’d like to know what I need before I take it apart.

Any suggestions or help would be greatly appreciated.

Got instructions on U-tube and bought a 2" block on e-bay. ETA, 3-5 days. So, I'm good to go.

MDubYa · Jun 22, 2023

poopster said:
Rear block question

2022 AT4 w/factory lift and I added the Ready Lift leveling kit and the Bilstein 5100 adjustable shocks in the front but now the front sits 1” higher than the rear. I’m installing the Bilstein 5100 shocks in the rear which won’t give me anymore height, so I’m thinking I need to replace the blocks in the rear but I’m not sure what to do. Do I replace the entire block or just add a 1” block on top of the OEM block? All I want is 1"-1.25".

I’d like to know what I need before I take it apart.

Any suggestions or help would be greatly appreciated.

Did you set the bilsteins to a higher setting or leave them at 0?

poopster · Jun 23, 2023

MDubYa said:
Did you set the Billsteins to a higher setting or leave them at 0?

Set the front shocks for maximum lift.

MDubYa · Jun 23, 2023

poopster said:
Set the front shocks for maximum lift.

Wow! I’m looking at the bilsteins and have the ready lift 2” kit. Have you had any issues with using the ready lift and the bilsteins? Reason I ask is that some were concerned about axle angle/stress and all that jazz.

poopster · Jun 23, 2023

MDubYa said:
Wow! I’m looking at the bilsteins and have the ready lift 2” kit. Have you had any issues with using the ready lift and the bilsteins? Reason I ask is that some were concerned about axle angle/stress and all that jazz.

I used the Ready Lift w/upper control arms, and it worked out very well.

2019-2023 GMC AT4 And Chevy Trail Boss - 1.75'' Leveling Kit

1.75" front leveling lift for 2019-2023 GM AT4 and Trail Boss Not compatible with Sierra AT4X or Silverado ZR2 Edition. Includes DOM tube steel upper control arms with TCT maintenance-free pivot bushings and 1-ton ball joints CNC machined aircraft-grade billet aluminum top and bottom strut...

www.readylift.com

I've only just installed this setup so I can't say anything about reliability.

debo4x4 · Jun 23, 2023

It would make sense that your font end is now higher than the rear if you used the highest circlip setting on the Bilstein(1.1") in conjunction with the 1.75" level, so you essentially lifted the front 2.75" over factory 2". The UCA are probably fine but you'd want to check your CV axles as I imagine they would be at a pretty high angle with that amount of lift and no diff drop.

flcmcya · Jun 24, 2023

You should have got the 2 inch kit and used the stock shock setting.

Your axles definitely aren’t happy.

The stock block on the rear is already 2 inches.

poopster · Jun 25, 2023

flcmcya said:
You should have got the 2 inch kit and used the stock shock setting.

Your axles definitely aren’t happy.

The stock block on the rear is already 2 inches.

You are correct, it is a 2" block already in there. I don't know why I thought the block was 1" but obviously the 2" block I ordered isn't going to work, I need a 3" block to level the truck. I did install the 1.75 Ready Lift with upper control arms, so my axle is indeed happy.
Now I realize that I should have set the front shocks lower but the reason I put those shocks in was I was rubbing badly with the 35" tires, even after trimming and could have still rubbed with the shocks set on lowest setting.
So, now I have to order the 3" blocks. I was going to wait on installing the new rear shocks until I had the new blocks but have changed my mind and will install them tomorrow.
Pictures to follow.