How do '86 k30 front springs differ from the '88 V30's?

[Chevy3+3]

I am thinking about putting an add a leaf into my current front spring packs on my '88 V30 and I see alot listed for up to '86 & '87 being one part number and the add a leaf kits for the '88-91 V series are a different part number. I just wondered if anyone might know what the difference would be. The reason I ask is because there are fewer manufacturers for my '88 and Summit sells a Skyjacker add a leaf kit but lists it for useon vehicles up to '86.

Thanks

[chengny]

The parts dwgs for the 85/86 K30 and the 87-91 V30 appear to be identical:

[wildwilly4x4]

Im not 100% positive, but from what I remember the leaf spring mount bolts are a different size. For an add-a-leaf I don't think there would be any differences.

[Chevy3+3]

I might just need to call the company and see why the difference in part #'s then. I installed a set of Skyjacker 2.5" softride front lift springs over a year ago. Skyjacker guaranteed them to lift a big block truck 2" and a small block 2.5". They did lift my BB exactly 2" on day 1 but a year later I think they have settled about a 1/2" more. I thought an add-a-leaf may work to help the spring pack that's already there.

[redneckwheelman2]

from what i found on ORD is that 88 and up they used metric bolts so the bushings are different, the springs are the same.

[MTCK]

Have you thought about an ORD zero rate? It would keep from stiffening up your front springs, which you may or may not be going for.