Cognito leveling kit or 4” Lift - Page 2 - Chevy and GMC Duramax Diesel Forum
Suspension&Steering Discuss what Mods for the suspension & steering are right for you.

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post #11 of 45 (permalink) Old 04-18-2018, 10:03 AM Thread Starter
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Ya I get what your saying. The only thing holding me back on a lift is that. With everything out the door it’s like $6500. Cognito 4” lift with Fox shocks and the steering support and the new tie rods. While running SOTA novakanes with the at2 tires 35x12.50/R20. I’m also looking to build the tranny,cp3 conversion kit, new turbo. First world problems lol.
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post #12 of 45 (permalink) Old 04-18-2018, 10:22 AM
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Quote:
Originally Posted by Dm23 View Post
Ya I get what your saying. The only thing holding me back on a lift is that. With everything out the door it’s like $6500. Cognito 4” lift with Fox shocks and the steering support and the new tie rods. While running SOTA novakanes with the at2 tires 35x12.50/R20. I’m also looking to build the tranny,cp3 conversion kit, new turbo. First world problems lol.
I feel ya. Well, you could always start with the UCA kit, and shocks, which will help with the ride, and give you some height. Get your wheels/tires etc. and see how you like it. If it isn't what you want, you simply add the components of the lift, especially if your planning to go Cognito anyways, their UCA kit works with the lift obviously. You'll end up spending more than just going with the lift first. However, if you level it with the UCA kit and your happy, your ahead of the game without spending the $$$ on the lift, and cutting up the truck. That was my logic, and to be honest I'm happy with just the UCA kit. A lot of it too for me was the fact that a 4" lift vs my level is marginally different in perceived ride height, so I'd be spending all this money and it wouldn't really look that much better. Sure it'd ride better, but again I'm satisfied with where I'm at ride wise now anyways. Now...if I wanted to do a 6-8" lift, totally different story.

Here's what my truck looks like with the UCA kit, wheels and tires:



I did have to do a little trimming to keep it from rubbing at full lock in reverse, since I went with a -12 offset wheel, but it was easy to do. Here's my
video on how I did it.

Bought 6/16/11: 2006 Chevy Silverado 2500HD, 6.6L Diesel (LBZ), CCSB, Bose system, leather. Southern Comfort Conversions edition. Includes: Custom faded two tone paint job, leveling kit, 18" chrome wheels, aftermarket interior trim, billet grille, remote start, wheel to wheel steps, and Line X installed. I upgraded to: Cognito UCA kit w/ shock extenders and Bilstien 5100's, Tie rod sleeves, 300W Rockford Fosgate Amp & 2 JL 8" subs behind rear seat, Tinted front windows to match, BakFlip F1 Tonneau cover, Reese 15k 5th wheel hitch, Prodigy brake controller, Toyo AT2's 295/55/R20 w/ Ultra 203 Hunter 20x9, -12, LED Concepts Colormorph Halo kit upper & lower.
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post #13 of 45 (permalink) Old 04-18-2018, 10:43 AM Thread Starter
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Yeah, your truck is exacting what I’m looking for. Your truck looks really good. Thanks for the pictures and the video.
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White 2012 2500HD LTZ Crew cab Short bed, 5" Mbrp W/O Muffler down pipe back,PPEI by Kory Willis,Rhino Lining,Diamond Eye DownPipe,FASS Titnium Series 165gph, Wehrli Custom Fab Intake bundle EGR Delete, PCV-reroute

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post #14 of 45 (permalink) Old 04-18-2018, 10:46 AM Thread Starter
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A 295 is what?? Like a 33?

White 2012 2500HD LTZ Crew cab Short bed, 5" Mbrp W/O Muffler down pipe back,PPEI by Kory Willis,Rhino Lining,Diamond Eye DownPipe,FASS Titnium Series 165gph, Wehrli Custom Fab Intake bundle EGR Delete, PCV-reroute

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post #15 of 45 (permalink) Old 04-18-2018, 10:50 AM
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post #16 of 45 (permalink) Old 04-18-2018, 11:09 AM Thread Starter
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Modded fenders. Such as??

White 2012 2500HD LTZ Crew cab Short bed, 5" Mbrp W/O Muffler down pipe back,PPEI by Kory Willis,Rhino Lining,Diamond Eye DownPipe,FASS Titnium Series 165gph, Wehrli Custom Fab Intake bundle EGR Delete, PCV-reroute

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post #17 of 45 (permalink) Old 04-18-2018, 11:21 AM
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Figure spending about $1000 for the UCA's, shocks and leveling kit.
If you have to go higher than 2 1/2" the 2" shock extensions might not help enough, and the ride will be real chitty.
Bilstein offers a shock that's 2" longer, that along with the 2" extension will put you in the ball park, otherwise the shocks will be maxed out and jolt your neck every time you go over the smallest bump. Again the ride will be chitty.
I had to go about 3 1/2" this is what the moron shop raised mine to, to get close to level, I suffered about 3 years.
2 years before I figured out that the stock shocks with the 2 " spacer was not enough.

You might consider doing some more price shopping.

If you level then decide to lift, you’ll need new shocks.
I would be measuring to see how high you’ll have to go to get the height you want, then decide.

Dan
2007.5 GMC Sierra 3500 SRW L.B."BLACK" C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe
DHD PCV Re-Route
AirDog 4G100

2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning

Last edited by D_R_C; 04-18-2018 at 12:09 PM.
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post #18 of 45 (permalink) Old 04-18-2018, 01:27 PM
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Quote:
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A 295 is what?? Like a 33?
Yeah its just a hair shy of a 33" tall tire, and about 11.5" wide. I've been extremely happy with these tires, they have done really good in the snow, and wet weather (so long as you are gentle from a dead stop) and are pretty damn quiet for having a more aggressive tread pattern. Been running them nearly a year now, and still look brand new.

I opted to go the 295/55/20 route because it was nearly a 33x11.5 and unlike the 35x12.5 I was looking at, price wise was cheaper and they fit without too much modification.

Bought 6/16/11: 2006 Chevy Silverado 2500HD, 6.6L Diesel (LBZ), CCSB, Bose system, leather. Southern Comfort Conversions edition. Includes: Custom faded two tone paint job, leveling kit, 18" chrome wheels, aftermarket interior trim, billet grille, remote start, wheel to wheel steps, and Line X installed. I upgraded to: Cognito UCA kit w/ shock extenders and Bilstien 5100's, Tie rod sleeves, 300W Rockford Fosgate Amp & 2 JL 8" subs behind rear seat, Tinted front windows to match, BakFlip F1 Tonneau cover, Reese 15k 5th wheel hitch, Prodigy brake controller, Toyo AT2's 295/55/R20 w/ Ultra 203 Hunter 20x9, -12, LED Concepts Colormorph Halo kit upper & lower.

Last edited by West1134; 04-18-2018 at 01:29 PM.
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post #19 of 45 (permalink) Old 04-18-2018, 02:55 PM
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Here you go enter some tire sizes including 295’s, they’re a little over 1/2” taller than 285’s which is spec out at around 32.75.
https://www.discounttire.com/learn/tire-size-calculator

Just a little advice, the specs on every tire manufacturers tire size is not correct.
I checked several different tire brands same size.
Just kmeasure the actual tire and you’ll see for yourself.

Example 285/70R/17 mounted on a 8 1/2”’wide rim this is what tire companies get their measurements.
32.75 height and 102.73 circumference is what’s listed, when you actually measure it, it comes out to 32 1/8” (32.125”) and 100.8 circumference, this is a pretty good difference.

Going by the tire specs I sent in for a tune my speedo was off by almost 3 mph at 60.
I then measured it my tire which is about 1/2 worn down now 8/32 new is 16/32 it measured 99.5” circumference.
1/4” wear will not expand another 2” in circumference.

Dan
2007.5 GMC Sierra 3500 SRW L.B."BLACK" C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe
DHD PCV Re-Route
AirDog 4G100

2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning

Last edited by D_R_C; 04-18-2018 at 02:57 PM.
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post #20 of 45 (permalink) Old 04-18-2018, 04:37 PM
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Quote:
Originally Posted by West1134 View Post
Yeah its just a hair shy of a 33" tall tire, and about 11.5" wide. I've been extremely happy with these tires, they have done really good in the snow, and wet weather (so long as you are gentle from a dead stop) and are pretty damn quiet for having a more aggressive tread pattern. Been running them nearly a year now, and still look brand new.

I opted to go the 295/55/20 route because it was nearly a 33x11.5 and unlike the 35x12.5 I was looking at, price wise was cheaper and they fit without too much modification.
Toyo has the 295/55/20 at2s at 32.8"x12.2". I had these tires on my '15 and now on my '17, defiantly a decent tire.
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2017 GMC Sierra 2500HD Denali CCSD Z71
Kryptonite leveling kit
Fox shocks
Ultra Predator II 20x9 +12
295/55/20 Toyo AT2
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