Wheel spacers sold.
Look in your glove box and see if you have RPO code GU6 (3.42) or GU5 (3.23). I'm pretty sure that you have a 3.23 gear set in your truck, because that was the only gear available to 6.2 Denali's.
You will not gain any advantage going with such a small gear change, you're better off just staying out of 6th gear with the manual mode at highway speeds. Now if you step up to 4.10, you will see a great improvement in torque multiplication. With AFM still active in your truck, you will see a lot more 4 cyl mode while cruising around unloaded, and will still get decent mileage. Do not fear the gear, I ran 4.56s on my 07 5.3 truck with 33" tires, and it completely changed my driving experience.
pewterliftedz replied to allblack16's topic in 2014-2018 Silverado & Sierra ModsI believe they are -44. Truck looks great man, did you do the Norcal mod?
I've run both size kits on a couple of trucks, I like the way a 2.5" kit looks better. I have a 2.5" Rough Country kit for sale that will work on your 18', I ran it on my 17' with no issues. Let me know if you're interested. https://www.gm-trucks.com/forums/topic/214884-25”-rough-country-level-lift-2014-stamped-steel/?tab=comments#comment-2167021
pewterliftedz started following 2.5” Rough Country Level Lift 2014+ (stamped steel)
Like mentioned above, a 2018 has stamped steel. The crossover year is 2016 when it gets confusing.
pewterliftedz replied to Waterfowler41's topic in 2014-2018 Silverado & Sierra ModsDo the install instructions specify lift height at the different settings? Or better yet does anyone have the install instructions?
pewterliftedz replied to Waterfowler41's topic in 2014-2018 Silverado & Sierra ModsWent out to measure mine today, and it looks to be 5". I think I'm going to order the Eibach spings in a couple of months, and try them out on the 5100 shocks. My end goal would be to delete my lift spacer, and run just the spring and 5100 combo.
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