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Old 08-08-2017, 02:55 PM   #1
nonstop
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A Few Spring Questions!

Hi everybody!

I am trying to figure out an odd ball spring issue I have. So my truck is an 85 GMC K2500 with the heavy duty chassis/8600 pound gvwr. I have been checking out the rear springs, and can't seem to find much info on them! My springs are 7/1 and 56 inches long. Closest thing I can find to them on line shows for a half ton, rated at 1950 pounds per spring, but also seems thinner than my pack which measures 3 3/4 thick. Is this right? Seems odd to put that spring on an HD 3/4 ton.

My next question is, would 1 ton springs raise my truck? I know it would simply by having a thicker pack, but would it also be raised due to the difference in spring hangers between a 3/4 and 1 ton?

Thanks for any help you can give!

Nick
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Old 08-08-2017, 04:20 PM   #2
mongocanfly
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Re: A Few Spring Questions!

I can't follow what your asking..is something wrong with your 3/4 ton springs...can't really compare them to 1/2 or 1 ton springs
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Old 08-08-2017, 04:29 PM   #3
nonstop
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Re: A Few Spring Questions!

Essentially, I was wondering what these springs are rated at. Can't find anything online about them. It looks like they are starting to develop a negative arch at the front spring eye and I was starting to consider a replacement.

The truck is currently lifted 4 inches with rear blocks. That's why I was asking about the lift with one ton springs, if there was going to be some sort of additional lift with the one ton springs that needed to be compensated for.
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Old 08-08-2017, 08:17 PM   #4
mongocanfly
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Re: A Few Spring Questions!

would be best to get new springs if yours are going bad...then you could get them with the 4in lift done with the spring arch and get rid of the lift blocks...
I looked at my 1 ton and it looks like around 3in of arch in the spring and about 4in of spring stack not counting the load spring...but it takes a lot of load to make them give. ..would be a terrible ride in a pickup
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Old 08-08-2017, 08:25 PM   #5
nonstop
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Re: A Few Spring Questions!

Thanks for looking. I just looked at mine again. I have about 600 pounds in the bed right now, and it is sitting on the bottom overload leaf. I am guessing they are worn out. That might also explain the stiff ride too! Never really paid attention empty.
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Old 08-08-2017, 09:15 PM   #6
Pano
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Re: A Few Spring Questions!

http://67-72chevytrucks.com/vboard/s...d.php?t=599593


Take a look at my 87 V2500 with new springs installed. Those are the same tires I just changed the hub caps. It definately lifted the truck an inch or two.
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Old 08-08-2017, 09:59 PM   #7
sweetk30
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Re: A Few Spring Questions!

i like the ride of 22-547 leaf spring part # packs . http://www.sdtrucksprings.com/index....oducts_id=7356

altho i got mine from local shop . not offline.

there 56" long but for a 3/4 ton susburban and 2600lbs per pack .

much nicer ride in my k30 truck over the 3400lb packs stock . and to cover my missing gvw capacity firestone air bag kit .
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Old 08-08-2017, 10:14 PM   #8
nonstop
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Re: A Few Spring Questions!

Quote:
Originally Posted by Pano View Post
http://67-72chevytrucks.com/vboard/s...d.php?t=599593


Take a look at my 87 V2500 with new springs installed. Those are the same tires I just changed the hub caps. It definately lifted the truck an inch or two.
That is a good looking truck! I actually came across that thread earlier when I was looking for information about the springs. Would anybody be able to confirm for me that their rear springs are not sitting on the overloads while at rest? I know it's kind of a mundane request, but it would just help me confirm that my springs are likely worn out.

Thanks guys! I really appreciate the help and insight you guys have given me.
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Old 08-08-2017, 10:16 PM   #9
nonstop
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Re: A Few Spring Questions!

Quote:
Originally Posted by sweetk30 View Post
i like the ride of 22-547 leaf spring part # packs . http://www.sdtrucksprings.com/index....oducts_id=7356

altho i got mine from local shop . not offline.

there 56" long but for a 3/4 ton susburban and 2600lbs per pack .

much nicer ride in my k30 truck over the 3400lb packs stock . and to cover my missing gvw capacity firestone air bag kit .
Thank you, I like the looks of those springs. I have a feeling almost any new springs I throw in there will give me a better ride than what I have now.
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