Suburban vs. truck rear springs
 

On my crew cab that is going to be a short bed, I have a 8-leaf pack, plus the "overload" on the bottom, PLUS an overload above the spring pack (camper special?). I was planning on replacing them with the 6-leaf pack (plus the "overload") from my parts 3/4 ton Suburban.
What I am wondering is, is a leaf pack, a leaf pack, a leaf pack? Meaning, as long as it is the same length (56") eye-to-eye, is the capacity the same? Or are the leafs themselves different from trucks to Suburbans?

This truck will never haul anything near a ton again, and at most it will tow a car trailer a few times a year. Reducing some of those leafs should help the ride quality I would think?

Re: Suburban vs. truck rear springs
 

Also, I just bought another Suburban for parts, an '88 1/2 ton.
It was lowered using "de-arched" springs in the back, probably close to 20 years ago. These leafs are a 5-leaf pack plus the "overload".
If the springs are the same eye-to-eye (they are also 56"), and the same width, I was thinking maybe these instead of the 3/4 ton leafs with some helper bags for when I tow.
Anyone see any problems with that?

Re: Suburban vs. truck rear springs
 

The individual leafs are slightly different thicknesses. I had a link to a vendor that had individual leaf thicknesses posted in the spec sheet but can't find it. Heres one that may help though http://thesuspensionking.com/catalog/index.php

Re: Suburban vs. truck rear springs
 

I have a 78 k25 pickup with rear suspension that feels like the axle is solid mounted to the frame. Im going to go with 1/2 ton 56" pickup springs in the rear instead. My thought is, Imagine you owned the truck that you are getting the rear springs from. Would you be satisfied with the ride and payload capacity? I think the springs i'll be using will be just right.

Re: Suburban vs. truck rear springs
 

The spring rate of a leaf pack is determined by the number of leaves, thickness of the leaves length and width. So yes, the spring rate of the spring packs you have is different. Changeing the spring rate will change the ride height and load capacity of the truck.