BradleyJC

The 2/4 drop leaves plenty of room for whatever offset and 305/40 or 285/45. There are several options for lowering the front, but I definately recommend the DJM flip kit for lowering the rear. The kit is fairly easy to install, and it makes setting the rear pinion a breeze. Just loosen the u-bolts and saddle brackets and rotate the axle until the driveline is aligned the way you need it. No shims required! I assume with the amount of HP and TQ your truck has, pinion angles would need to be set pretty accurately to keep your driveshaft and u-joints safe.

Finally done with the install of the 2/4 kit NorcalSS set me up with. Looks awesome and handles 1000 time better. Heres a pic. Pretty much 34.75" all the way around now. After getting the rear pinion angle aligned right, I have no vibrations what so ever. Truck rides and handle great with the Belltech shocks and the DJM rear sway bar!

ok, here's what I got. 36.5" in the front, 37.75" in the rear. I already have Belltech 2" drop shackles in the rear to level the truck (As you can see it really didnt level it). Ultimately, I want to end up with about a 2/4 drop with new struts and shocks front and rear (I still have the stock shocks and I have 115,000 on the truck). I am going to upsize my wheels to 22" with 285/45 tires, and I want to add a sway bar kit to the rear (belltech or DJM, whatever i can find a better deal on). I appreciate your help, Norcal. You seem like you know your stuff, and your trucks look Great!

I want to do 2/4, but I already have 2" belltech drop schackles in the rear to level the truck. Just checking prices, my cheapest route is belltech lowing struts up front to lower it 2", just the leaf spring flip brackets to drop the rear 2 more inches (if I can get those by themselves), and then belltech sp shocks in the back. Then I will end up with a 2/4 drop and new belltech shocks front and rear. But I don't want to scrifice the ride if the lowering struts set to -2" are going to make the front to stiff.

Would the belltech lowering struts work ok for the 2" drop in the front, or do I need to go with drop spindles to keep a good ride?

The 4wd guys wouldn't have a problem with vibration because on the highway your front drive section is not engaged. On my AWD it is always engaged, so I am worried about what the change in pinion angles up front will do. I agree with you on the springs, also. I might even just go with the belltech adjustable struts up front, since i need new shocks and struts anyway, and keep the stock springs.

I am looking to lower my 08 Sierra Denali AWD, and I was just wondering if anyone has any experience with this. I've heard changing the right height of an AWD truck may cause vibrations. I am thinking of doing a 2/4 inch drop. Anybody had any or know of any problems with this? Side note: My plans are to use lowering springs up front and drop shackles and block removal in the rear. Probably just going to run stock shocks if they will still fit.