K2500 Leaf Springs

1BadBowtie · Nov 15, 2019

I have a 1998 GMC K1500 truck and I am working on turning my suspension from a 1500 to a 2500. I have already upgraded the torsion bars and I am looking into doing the rear leaf springs but I don't know which ones would best suit my truck. I see there are ones for a 7,200 GVW and 8600 GVW.

Supercharged111 · Nov 15, 2019

7200 springs are nearly identical to the heavy half springs as a 4+1 pack. 8600 packs are a 5+1 and I have them on my 1500.

1BadBowtie · Nov 15, 2019

Supercharged111 said:
7200 springs are nearly identical to the heavy half springs as a 4+1 pack. 8600 packs are a 5+1 and I have them on my 1500.

Did you crank your front end at all? Did they affect your ride? Do you have any pictures of the ride height?

MSCustoms · Nov 15, 2019

I had to crank the front end because the stack is larger and has less sag. I noticed the rear of my truck was much stiffer but dont notice it now. It sags less when towing a trailer as well

stutaeng · Nov 18, 2019

1BadBowtie said:
I have a 1998 GMC K1500 truck and I am working on turning my suspension from a 1500 to a 2500. I have already upgraded the torsion bars and I am looking into doing the rear leaf springs but I don't know which ones would best suit my truck. I see there are ones for a 7,200 GVW and 8600 GVW.

Did the K1500 have forged lower control arms? I thought the K2500 and K3500 had them, not sure of the K1500 if they were stamped or forged. Unfortunately, I recall forged LCA are not available new? Junkyard is an option.

Turbokat · Nov 18, 2019

stutaeng said:
Did the K1500 have forged lower control arms? I thought the K2500 and K3500 had them, not sure of the K1500 if they were stamped or forged. Unfortunately, I recall forged LCA are not available new? Junkyard is an option.

After what i know they didn't come in k1500s and not all k2500 have them either

MSCustoms · Nov 18, 2019

Turbokat said:
After what i know they didn't come in k1500s and not all k2500 have them either

K1500 also have a hybrid that are also labeled as stamped. The ball joint side is forged but joins into a stamped arm. Not sure when gm came out with those but it decreased the turning radius

K2500 Leaf Springs

1BadBowtie

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