lapoolboy

All good man. ?

Thanks for sharing but wrong truck, wrong lift, and wrong thread.

I'll just snatch the damn things out and see what it does.

Yep....I know mine is installed the correct direction because I didn't remove them....my question is whether the things even need to be installed or not. ReadyLift says remove them, SuperLift says remove them....everyone else says keep them in place.

Mine has the thin part of the shims facing the rear of the truck.

The shim is held in place by the leaf spring centering pin. The pin has to be removed to slide the shim off and then the pin is reinstalled. The Pro Comp instructions say "DO NOT remove the shim or adjust it's orientation". The SuperLift instructions say to remove it completely. Some kits have flat blocks and some have tapered blocks so it's hard to standardize what is correct here.

Found this paragraph in the ProComp instructions.... As shown in PHOTO B, place the 4” (95- 401) blocks in position. Make sure the pin in the block is in the hole of the axle housing spring pad. The short end of the block goes toward the front of the vehicle. Install the block so the pinion moves up. DO NOT remove the factory axle wedge or alter its orientation. NOTE: The block pins may need to be ground down so that the blocks sit flat on the axle housing spring pads. That muddies the water a bit, but since ReadyLIFT says to remove them, I guess I will remove them. It would help if I could speak to someone there who designed the kit, but all I can get are the customer service girls and I can't help but think they are just guessing.

I have a 2019 Z71 LTZ. I've had the ReadyLIFT SST 4" lift on my truck for a couple hundred miles. It is aligned perfectly to the recommended specifications. The truck drives great, tracks straight, and has no shimmy/shake/vibration/etc. evident in the front-end or steering wheel. BUT..... At around 60 mph (+/- 5 mph), there is a rumble/vibration felt. I believe it is coming from the rear-end as a result of improper pinion angle. I *think* I can even hear the slight rumble/roar more when I turn my ear towards the back of the truck. When I was installing the kit, I noticed there were two thin shims installed under the leaf springs from the factory. There was no mention in the instructions to remove them. In fact, one of the photos in the instructions clearly shows these shims left in place, so I too left them in place. I contacted ReadyLIFT about this issue and they "STRONGLY BELIEVE" (their words) I should remove those shims and that they are likely causing the vibration. I asked why it wasn't mentioned in their instructions and they said they have not encountered this issue before. They said the tapered blocks are supposed to correct it. The factory shims basically negate the taper of the ReadyLIFT blocks and maybe that's the culprit? I am going to remove the shims this weekend and see how it goes but I wanted to check here and see if others with lifted trucks have these factory shims installed above the blocks or not - a poll of sorts before I dive into disassembling it. I checked the installation instructions for BDS, Zone, SuperLift, etc. to compare. SuperLift is the only one that specifically states to remove the factory shims. They all appear to utilize flat blocks though. See pic of shim:

Ionic Automotive 41 series. $250. I just ordered some myself!

Mine is the same way. Super minor cosmetic issue and really not worth the dealer screwing up something more important trying to lift and adjust the cab and/or bed. Certainly not worth a buy-back in my opinion.

Length

Thanks!

Good luck

Because the new trucks have narrower diffs/longer CVs. The angles are just fine.

No diff spacer needed with the 2019s+. Blocks in back.

4" ReadyLIFT SST....very easy install....did it myself over the weekend. Shops around here wanted $800+ to install! ?

Finished installing the lift. Alignment tomorrow and then I'm good to go!

Pop the plastic cover off the camera housing behind the mirror. There is a harness you can plug a MirrorTap into for switched power. The connector sits horizontally and you will plug in on the passenger side. If I remember correctly, the wires are red (+) & black (-), but use a meter to confirm.

ReadyLIFT SST 4"

Got front half of lift installed today. Will get the back finished tomorrow and go to Firestone for an alignment.

O....M....G.... ?

Which one exactly?

I don't think it will affect the alignment. I can't see how wheel (or tire) size would change the camber, caster, or toe. If it's aligned, it's aligned. Camber and caster I would for sure think wouldn't be affected. Toe I could see being affected if they new tires are wider maybe.

Looks nice. I'm preparing my tool & materials list to install my ReadyLIFT SST 4" on Saturday. I'm hoping it doesn't look too goofy with the stock 275/60R17s for a while. I've looked at several other trucks with same lift and they look fine on the stock tires.