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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Topic started by: Swampyankee74 on August 04, 2022, 02:04:43 pm

Title: V20 rear leaf springs
Post by: Swampyankee74 on August 04, 2022, 02:04:43 pm
I recently purchased a 1987 V20. While working on it I noticed the rear leaf springs had 4+1 leafs. The vin number says its a v20, the breaks and drive train all match a v20. Did someone swap the rear leaf springs out with a half ton pickup?
Title: Re: V20 rear leaf springs
Post by: Shifty on August 04, 2022, 03:19:50 pm
I've got a good 1.38 million things going on, but I'll try to peek at mine tonight...
Title: Re: V20 rear leaf springs
Post by: Swampyankee74 on August 04, 2022, 03:52:36 pm
Sounds good, thank you
Title: Re: V20 rear leaf springs
Post by: VileZambonie on August 04, 2022, 07:20:06 pm
My 1980 C10 had twice the amount of leaves of my K20. You have to figure out what you want in terms of height and spring rate.
Title: Re: V20 rear leaf springs
Post by: Swampyankee74 on August 04, 2022, 07:59:13 pm
The truck is stock height. No lift. And I intend to keep it stock. I just didn't know if somebody had taken the stock Springs out of it and put these in for a smoother ride.. Because like you said my 1974 C15 has doubled the amount of leaves as the v20. Made me think somebody might have altered it at 1 point in time. But you're saying you think that is the stock amount of leafs?
Title: Re: V20 rear leaf springs
Post by: Shifty on August 05, 2022, 09:12:40 am
My 87 V20 has 7 + 1!  No wonder it rides like a giggered tank....
Title: Re: V20 rear leaf springs
Post by: Swampyankee74 on August 05, 2022, 02:36:38 pm
That sounds to me like the right number of leafs. Which makes me beleave someone at some point swapped these springs out with a 1/2 ton. The rest of the truck including Vin matches  what a v20 is supposed to be. Thank you for taking a peek at yours for me shifty!
Title: Re: V20 rear leaf springs
Post by: Swampyankee74 on August 05, 2022, 02:45:55 pm
Just took a peek at my 74 c15 it is a short bed stepside and it has 7+1. It is bone stock unmolested.  But was ordered with heavy duty springs and clutch. Doesn't make sense to me the 3/4 ton has less leafs.
Title: Re: V20 rear leaf springs
Post by: Swampyankee74 on August 05, 2022, 06:06:01 pm
I guess if your v20 has 7 leafs, and my half ton has more springs someone swapped the leafsprings out with a lighter truck.  I got porked. Lesson learned
Title: Re: V20 rear leaf springs
Post by: csdineley on August 05, 2022, 06:51:52 pm
My 87 has 56" 7+1 on the Back and 4+1 on the front.
Title: Re: V20 rear leaf springs
Post by: VileZambonie on August 05, 2022, 07:10:33 pm
Unless your SPID label is in place and shows the suspension options you are solely basing what it came equipped with on assumptions.
Title: Re: V20 rear leaf springs
Post by: Swampyankee74 on August 06, 2022, 06:31:58 am
That is true. I'll take a peek at it
Title: Re: V20 rear leaf springs
Post by: Swampyankee74 on August 06, 2022, 07:27:07 am
Just decoded the rpo codes on the spid. The truck is a 6600 pund gvrw. A lot lower then I would have expected.