My truck has a ton of sag. I have 1.5" blocks on it and with a small (160cc) atv and some camping gear my nose is pointed to the sky!

Odd thing is when I have a 4k lb trailer hooked up it looks completely level. Not sure what's up with that. I guess there's not much weight on the tongue of my trailer.

 

I'm starting to wonder if the Leer cap is just causing an "optical illusion" making me think it's sagging more than it really is. Anyone know what the stock front/rear ride height measurements should be?

 

Maybe u need to get rid of the leveling kit and maybe keep the blocks. Then under load the truck will level.

 

Go with the Monroe load levelers (SensaTracs)
my truck had the same problem, with very little weight in the back, the thing would drop down a good couple of inches.
now that I have on the Monroe shocks, the truck barely goes down in the back with the same load. And to note, the Rancho shocks I removed from the rear after only 30k or so were completely shot. we just need heavier shocks in these trucks
Plus the fact that the Monroe "coil-overs" look good too

 

To elaborate on what I said, I forgot to mention that I have Belltech shocks in the rear. I wouldn't think that would make much of a difference but it is a difference from stock. I also have the tow package from the factory.

 

Think of it like this. You added only 300lbs to the back, thats LESS then having to grown men back there. Do you really think it would sag that much with 2 people in the back?? I think its just an optical illusion.