SATX

14 Silvy - Don't know if this helps but here is the angle measurement at my rear pinion.

14 Silvy - I will get my angle finder out and take a pic this weekend measuring the angle. I will post it up on Monday for you.

Since this site helped me so much I thought I would add my finished project along with some technical information. Truck: 2014 GMC Sierra 1500 V8 Crewcab 2WD Lowering Kit: Belltech 996SP Wheels: Black Rhino Traverse wheels 22"x9.5" offset 25 - had the outside spokes masked and inside done in a gold powder coat and then clear powder coated. Front Tires: 285x45 Yokohama Parada Spec-x - no fitment issues - no mods to inner fender skirt Rear Tires: 305x45 Yokohama Parada Spec-x - no fitment issues - no mods to inner fender skirt Lowering Option: I went with 3/5 Installation - I did this on jack stands in my driveway. I am an occasional shade tree mechanic. Probably had 60 man hours or 5 weekend days to complete. On a scale of 1-10 with 10 being the hardest it was probably an 8 doing the job on jack stands by myself. There is NO frame notching with Belltech's 996SP kit. It was very time consuming and doing the flip kit in the rear required some ingenuity because the axle had to be suspended and tied high and held while I did all the spring work. Cutting off the bump stops was a pain. I had to use my plasma cutter. Drilling out the 3 rivets per rear leaf spring hanger was a pain. Used an air chisel after drilling a hole down the center to knock off rivet heads and then air punch to push them out. Replaced all the factory bushings with poly as well and that was a major pain removing the old that only had 14,000 miles on them and replacing with the new. After I had everything complete the last step was installation of the transmission spacer to correct the driveline angle. When I rolled up to the transmission on my creeper I discovered my driveshaft had fallen out with all the moving of the rearend that I had done. It was resting on the frame brace so it never it the ground and was why I did not notice it. It made it easier to install the spacer anyhow. When I went to re-stab the driveshaft after unbolting the rear u-joint I was like holy crap this thing may not go back in because the snout was bottomed out in the tranny. I managed to wedge it in there and then pulled it back to fit into the rear end pinion. Belltech says no driveshaft shortening necessary. I read the driveshaft should insert on the tranny spline 70%. I will go in and measure the distance. I can tell you there is zero driveline vibration. The truck drives perfect at very high highway speeds as well as low speeds. About the only mistake that I made and I see no reason to change was I am running the Belltech shackle at the rear of the springs rather than the factory shackle. I did not see the table in the Belltech instructions that says for the 3/5 option use the factory shackle. The rake on the truck to me is perfect. Just a tad bit higher in the rear than the front. The profile is amazing. Alignment - Belltech says back to stock. No issues no problems cost me $71 out the door. Final ride quality - exactly like stock. Truck drives absolutely perfect. I was surprised. Nothing rough, bumpy, springy like a low rider - nothing. Just like stock. Apparently Belltech did a great job on this kit. If anyone has any questions let me know and I will try to answer them or take any pics you may need of the installation.