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#1 |
Registered User
Join Date: May 2016
Location: Green Bay, WI
Posts: 134
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C20 Moog coil spring replacment options.
Hello I'm looking to replace all four coils on my 72 C20. I'm looking at the Moog springs specifically. https://www.moog-suspension-parts.co...20_pickup_1971 I've already decided I wanted to go with a constant rate spring. So that leaves me with two options for the front and back. Standard and HD springs. Moog 6102 vs Moog 6104 for the front and Moog 6101 vs 6103 for the rear. I'm wondering if the HD springs will make the truck sit higher or lower than the standard in the front and back. Which ones should I go with? My truck doesn't have the spid option for the heavy duty springs so i'm thinking I have the regular 3/4 ton springs. Thanks.
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#2 |
Senior Member
![]() Join Date: Mar 2017
Location: Northbridge,MA
Posts: 494
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Re: C20 Moog coil spring replacment options.
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72 C20 292 3OTT 77 GMC 2500 4x4 Longstepper 350 4sp 50 3100 ex Airforce/Town of Mendon fire truck 72 GMC 1500 2wd short stepside 250 4sp 78 GMC 2500 4x Longstepper 292 4sp 54 6400 Chevy 5 window 4 sp 2sp vac rear end Shell oil truck/dump truck (Norman) |
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#3 |
Senior Member
![]() Join Date: Jun 2000
Location: Texan in Iowa
Posts: 2,522
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Re: C20 Moog coil spring replacment options.
My understanding is that any of these springs shouldn’t change the ride height of an empty pickup, only the spring rate. I’ve talked with Gary at Eaton Detroit Spring about differences between C10 & C20 coils (frt & rr) in these years and he says the same.
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Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3 |
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#4 | |
Registered User
Join Date: May 2016
Location: Green Bay, WI
Posts: 134
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Re: C20 Moog coil spring replacment options.
Quote:
Moog # 6082 722 lbs/in 6 cyl, and light v-8 Moog # 6542 842 lbs/in std v-8 Moog # 6102 1015 lbs/in bigblock, longbed c.s. Moog # 6104 1016 lbs/in 3/4 ton, sits 1/2" higher than #6102 Moog # 6454 1060 lbs/in 3/4t bbc, c.s, 1ton I'm wondering when he says a 1/2" higher is he talking about ride height or overall height of the spring? |
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#5 |
Senior Member
![]() Join Date: Jun 2000
Location: Texan in Iowa
Posts: 2,522
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Re: C20 Moog coil spring replacment options.
Interesting, I didn’t realize Moog had that many options for front springs. Are all of these springs supposed to be spec’ed after a factory spring? Or are some of them unique to Moog?
I think when they refer to the height where it “sits” I think they are comparing installed springs. These springs are various heights when uninstalled, and some of the lighter springs are likely to be taller than the heavier ones.
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Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3 |
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#6 |
Registered User
Join Date: Feb 2011
Location: Parkville, MD
Posts: 1,024
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Re: C20 Moog coil spring replacment options.
You should be able to calculate how much the spring will be installed given the spring rate, uninstalled height and weight of the truck at the front wheels.
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1970 C20 Custom Camper - 350, TH350 1997 GMC Suburban 1994 Acura Integra GSR 1987 Dodge Daytona Shelby Z |
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#7 | |||
Registered User
Join Date: May 2016
Location: Green Bay, WI
Posts: 134
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Re: C20 Moog coil spring replacment options.
Quote:
Edit: I found a post for the rears. http://67-72chevytrucks.com/vboard/s...d.php?t=559203 Quote:
Quote:
Last edited by Chilly178; 03-28-2019 at 07:35 PM. |
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