SMiller

Drove a ATX4 today and was kinda let down, shocks were stiffer then stock, ride was unimpressive, I was expecting more of a Fox shock feel which each smaller bumps and is a smooth ride, these shocks are stiffer then stock, I'm guessing they eat BIG bumps better but day to day a huge let down. Really wanted to order the upper control arms but I see the mount the brake lines on them, guessing I will stick with stock or go aftermarket upper control arms.

My question is can we simply swap out the upper control arms? Seems like a great option for those looking to simply crank the torsion bars while correcting the ball joint angle. Would be interesting to compare a stock, ZR2, and a Cognito/Kryptonite. I am used to using aftermarket A-arms and front diff spacers, seems the GM version actually lowers the entire cradle. Crazy GM went through all this work for 1.5in as the rest of the height comes from the taller tires.

Is that 15-20hp across the band or at peak rpm? I have seen many dynos with cold air intakes that show 22hp gains yet they are down power everywhere but the specific small spot where there is a gain. Fakenews... I am a header fan but a small cam L96 that doesn't spend much time in the 4000+rpm peak power rangers I just don't see making huge gains where they are needed.

Leave it be, how often are you truly at full lock? Even then it makes zero difference, wheel spacers come with their own headaches.

How much power is gained with headers over a stock tuned 6.0?

Unless you are going to cam and tune you are wasting your time.

Would there be any size difference?

Removed lower valance, leveled, and tires. Well done! Tire size 305/55/20's or 35x12.5x20's?

KO2's in 285/65/20 There is another 2500HD that runs around here with that combo and leveled and it looks perfect!

Sorry I just seen where you listed that in the level thread, I sure think they are bigger then that though, I see Cooper makes a 305/70/18, wonder if they are that as they look closer to 35's.

What size tires?

'17 Denali with High Country wheels, don't see that combo everyday.

Yep, anything under 4,400rpm is on the bottom side of the powerband.

Both great tires!

Yep they fit.