67-68 1/2t vs. 3/4t leaf springs

[JAKES 68GMC]

Would the leaf springs in a 67-68 K10 bolt into a 67-68 K20 4x4? Are the half-ton springs as rugged/have as many leaves as a 3/4 ton? (probably not) I may be able to get a stripped 67-68 for 100 bucks, still has the t-case and axles/ springs and stuff. I was thinking I could get the K10 springs rearched and put them under my GMC, but wasn't sure if it would work. Thanks for the help.
Jake

[JAKES 68GMC]

Anyone know?

[jacobs]

Spring length eye to eye should be the same. The heavy duty 1/2 ton may have the same number of leaves as the std 3/4 ton however I wouldn't count on them being rated the same. Of course you can always add leaves to any spring and make it as heavy as you wish.

[6T8]

I had a '67 3/4 ton 4x4 stock springs. Could hardly stay in the seat. Terrible ride. Don't know if it had overloads or not. Didn't have it very long. I would try 1/2 ton springs. Just my 2 cents..........Rick

[JAKES 68GMC]

My truck rides real smooth believe it or not. It's bouncy, not rough. I wanted to get some leafs rearched 2-3in. higher and put them under my truck, make her a little higher. I could probably get another leaf put in them while getting them re-arched and make them 3/4ton springs. Thanks Rick and JAKE!
Jake

[special-K]

I`m not sure how the factory determined spring rates,but on a 1/2 or 3/4 you could have HD springs.Maybe an extra leaf,different taper,thicker,more tempering?I know you don`t want to kill your ride.I had the leafs on my`90 Blazer arched and they added a leaf to hold it.It rides nice.It`s a little different than Add-A-Leafs that are an overarched leaf you squeeze in there to "force" the other leafs to arch.When arching springs,the metal is actually "stretched" and this serves to soften a spring,that`s why they add another leaf(which is arched to a matched contour).I arched my own lift into some springs using an anvil.That`s stretching the metal.Start in the center and draw it out from there.I didn`t add a leaf.The truck never sagged while I had it and rode fine as stock.The 1/2t leafs may have a softer ride,can`t say for sure.But,what you`re considering is the best way to get a couple inches,not stiffen the ride excessively,short of buying soft design 2" lift springs.

[JAKES 68GMC]

Originally Posted by special-K

I`m not sure how the factory determined spring rates,but on a 1/2 or 3/4 you could have HD springs.Maybe an extra leaf,different taper,thicker,more tempering?I know you don`t want to kill your ride.I had the leafs on my`90 Blazer arched and they added a leaf to hold it.It rides nice.It`s a little different than Add-A-Leafs that are an overarched leaf you squeeze in there to "force" the other leafs to arch.When arching springs,the metal is actually "stretched" and this serves to soften a spring,that`s why they add another leaf(which is arched to a matched contour).I arched my own lift into some springs using an anvil.That`s stretching the metal.Start in the center and draw it out from there.I didn`t add a leaf.The truck never sagged while I had it and rode fine as stock.The 1/2t leafs may have a softer ride,can`t say for sure.But,what you`re considering is the best way to get a couple inches,not stiffen the ride excessively,short of buying soft design 2" lift springs.

Exactly. My truck rides well for a 40 year old truck, I just want it a little higher in the air. Rearching another set of springs that'll fit your truck is the best and cheapest way to get a lift, IMO.