payload

Bedlam wrote:
It’s very possible to haul the 811 on a 3/4t. All of these trucks are riding on 10k LB rated rear axles but have softer springs and lower rated wheels which are holding you back.

If you plan to keep the camper on the truck, just replace the axle entire rear spring pack with a a heavier from a place like SDTruckSprings.com If you want keep somewhat of the same unloaded ride, you will need an upper overload string that engages quickly and and a way to preload the entire spring pack by using wedges on your lower overload spring.If you do not both front and rear stabilizer bars on the truck, you will need these to reduce roll regardless of which spring upgrade up choose.

If you do not plan to tow behind the camper there are plenty of tire and rim combinations at or over 3750 lbs that will give you sufficient capacity. If you tow or pack heavy, go to 4500 LB rated 19.5” rims tires that exceed that rim rating (most likely a PR16 LRH 245/70R19.5 tire). This size tire will. E about 33” tall and will require a little work to fit properly in the front of a GM truck, but multiple solutions are well documented here.