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12-05-2016, 02:19 PM
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#1 |
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Registered User
Join Date: May 2016
Location: Sun City, CA
Posts: 34
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C20 Leaf Springs
My C20 has 8/1 leaf springs there 3 1/16 spring pack thickness. I have a chance to get a pair of new 3 5/8 which are heavy duty at a great price. Is the ride going to be that much different? Any input you have would be great
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12-05-2016, 02:23 PM
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#2 |
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Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: C20 Leaf Springs
How many springsd are in the new pack?
__________________
Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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12-05-2016, 02:35 PM
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#3 |
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Registered User
Join Date: May 2016
Location: Sun City, CA
Posts: 34
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Re: C20 Leaf Springs
Same amount of springs just a thicker pack. Same configuration. 3 3/16 are rated 2600 lbs and 3 5/8 rated 3500lbs
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12-05-2016, 03:39 PM
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#4 |
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Registered User
Join Date: Feb 2011
Location: MA
Posts: 116
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Re: C20 Leaf Springs
http://67-72chevytrucks.com/vboard/s...d.php?t=723734
This thread discusses a little of what you're asking. |
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12-06-2016, 10:50 AM
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#5 |
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Registered User
Join Date: May 2013
Location: Mississippi
Posts: 501
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Re: C20 Leaf Springs
I have been looking into replacing the rear leafs on my 3/4 ton suburban with one ton springs. Does the higher load rating affect ride height?
__________________
 1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824 |
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12-06-2016, 04:42 PM
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#6 |
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Registered User
Join Date: May 2016
Location: Sun City, CA
Posts: 34
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Re: C20 Leaf Springs
I think the ride height would be the same. If your old springs are sagging then you would notice a difference.
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12-06-2016, 05:36 PM
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#7 | |
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Registered User
Join Date: May 2013
Location: Mississippi
Posts: 501
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Re: C20 Leaf Springs
Quote:
Thank you.
__________________
1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824 |
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12-07-2016, 10:43 PM
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#8 |
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Registered User
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 888
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Re: C20 Leaf Springs
When I changed the springs on my '85 C3500 I upped to a 3,900 lb.-rate spring (assuming what came out was the standard 3,500#) and stock application Monroe Magnum shocks are nearly fully extended. There's no way to tell how far the old springs had sagged, but it sits a good 3"+ higher now. Ride isn't a lot stiffer, but neither the 3,500 or 3,900 pounders are any semblance of smooth until there's 2,200 lbs. of the truck + at least 500 lbs. of cargo sitting on them. If you're concerned about ride comfort at all, stick with the 2,600 pounders. If it was a 3/4 ton small block truck I'd have probably opted to stay lighter when I replaced the springs, but with a 454 and FF 14-bolt axle I didn't want the truck dragging the ground before I even tested the drivetrain's ability.
__________________
Alex V. ------ 1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs. 1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue. |
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12-07-2016, 11:10 PM
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#9 |
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Registered User
Join Date: May 2016
Location: Sun City, CA
Posts: 34
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Re: C20 Leaf Springs
Thanks for the Great information. Mine are the stock 2600 lbs springs. There 43 years old and one spring has a broken center pin plus worn bushings. There's a set of brand new 3500 lbs springs for $100 and there a 110 miles from me. I don't do any hauling but for the price of them I may just take a chance on them
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