Improving rear sag

I believe you can adjust Timbrens to have almost no sag. They are typically adjusted to not effect the suspension unloaded. If the camper is going to be loaded basically full time, that shouldn't be a problem. They are a variable rate spring that usually has a gap. Buy the heavy-duty ones and adjust them so that there is no gap or even slightly preload them using spacers. I believe you can also use them in combination with upper Torklift Stable-loads to put some of the work on the overloads as well.

You can tell from my signature what I run, and I've found air suspension to be easily adjustable and relatively free from reliability issues for the past few RVs I've used including a Class A.

Unloaded, your truck sits at a given height. Load the TC, and it will definitely squat, regardless of what you have for suspension. Overload springs, Timbrens, and all other fixed supports may reduce how much it sags, but cannot return the truck to its unloaded height. Regardless of how you install them, they must compress to take up the slack, and when the compress the truck will squat. To my knowledge, only an air suspension is adjustable after you apply the load. If you are not interested in air bags, then you will have to accept the squat.

Wayne

Look at your OEM overload springs first. If they are not engaging until the rear sags too much, StableLoads will allow them to engage sooner reducing your sag. By using the blocks on the upper springs and wedges on the lower springs, I only lose about 1-2" of height off the rear suspension when loaded. Once I hitch up a heavy trailer, I use my airbags to get back to about 1" of sag. Since the StableLoads are not changing your spring rate (only change when the overload engages through preload), your ride quality should not be compromised.

I tried Timbrens on my truck and the ride was harsh. Changed to Ride Rite air bags, smooth ride and easily adjustable! Highly recommend!!

X2 for airbags. I know you said no airbags, but it helps me in this situation, so thought I would chime in. Airbags work good for raising the truck a couple of inches as long as you keep the overloads still engaged. Once you put too much air in them, for me over 20PSI, it starts getting tippy.

Once my camper is unloaded, I turn them down to 5-10 psi for a stock again ride. I also can add a little more air when i'm towing my boat to get me level, opposed to just the camper. Also nice for leveling one side or the other when camping with the truck in the bed of the truck. I recently camped and added 65 psi to one side-5 psi the other and was level for 2 days.

Good luck and report back with results of your final decision.

Several years ago I owned a 1 ton chev crew cab dually with a 10 1/2 ft Lance camper. My first try was to use heavier springs and overloads. That did not work for me. I went back to stock springs and Firestone RideRites for the rear. Worked out great because I could let out the air when I took the camper off my PU.

My solution was air bags.
Good Luck, Mike

Super Springs