I was crawling around under my truck recently and thought my rear leafs didn't look quite right. Also when hauling any decent sized load my back end sags quite a bit more than I am comfortable with.
Does this look wrong to anyone else?
I am the second owner and have no clue what the previous did, looks like maybe a leveling kit?

And in any case I am considering options to beef up my suspension for hauling heavier loads (airbags or helper springs) and would like to get everything squared away before adding anything extra.

 

If a leveling kit, that would be up front. What I see looks OEM and just dirty.

 

Are you talking about how they looked flattened out or straight?

 

I dont see any pressure on the "overload" spring, so I don't see what you're seeing as far as worn springs?

 

My 2004 3v SuperCrew has four leafs.

 

that spring looks flat as hell. I just pulled mine out and did a lowering kit and mine had a lot more arch to them before that with weight on the vehicle. I would say someone may have dearched them or they are just worn out. They look way to parallel to the frame and your bump stops look way to close to your rear axle.

 

He has one less leaf spring installed, unless the newer trucks came that way!

 

my 2014 F150 only has 3 as well.