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#1 |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Front coil spring question
I got the old springs out and found a rubber isolator at the bottom. Is that original or something someone added? It’s like 1” thick. Do I need an isolator?
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#2 |
Senior Member
![]() Join Date: Jun 2022
Location: San Ramon,CA
Posts: 505
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Re: Front coil spring question
mine sat in a pocket in the lower control arm, metal to metal :shrug:
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1970 C10 Custom longbed 350/350 |
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#3 |
Senior Member
![]() Join Date: Jun 2002
Location: Murray, Kentucky
Posts: 3,483
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Re: Front coil spring question
I've had a few of these trucks but have never had a rubber cushion in any of them.
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Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203 |
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#4 |
Registered User
Join Date: Sep 2016
Location: Ft Smith, AR
Posts: 566
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Re: Front coil spring question
on a side note, are those 2" or 3" drop springs?
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#5 |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
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#6 |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
They are supposed to be a 1” drop. I got them from POL. They had a deal on front and rear springs. I got 1” front and 2” rear.
Front should sit considerably lower without the isolator and the new springs. Photo is with 2” springs in rear, and the original springs up front. |
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#7 |
Senior Member
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Location: Harrison, Arkansas
Posts: 9,815
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Re: Front coil spring question
Those are not original. I used them for years to raise the front. I still keep a couple of new sets in stock to adjust ride height.
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other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. |
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#8 |
Registered User
![]() Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,208
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Re: Front coil spring question
Ah, the infamous 'Chevy Lean'
Opinions will differ I'm sure, but after dropping as many of these trucks as I have, from 67-87. Even the S10s.. GM apparently built these trucks lower on the drivers side than on the passenger side. Was the isolator in one side, but not the other? If so, I'm betting it was in the drivers side? If it had isolators on both sides then I'm off base.. but drivers side only imo would be a spacer to adjust the Chevy Lean. It's hard to see on a stock height truck. But, with a big static drop you'll usually see the drivers side sits about 3/4" - 1" lower than the passenger side. I don't know how true it is but I've read GM built the trucks this way to accommodate the difference in the crown of the road. So the trucks feel like they sit level, vs leaning toward the passenger side as you drive them. Weird.. but I use a 3/4" Belltech spacer on the drivers side of almost every truck, S10, Blazer, etc I build. Just my .02
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Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway* 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet *Sold* 1985 Silverado Short Fleet *Sold* 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride) |
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#9 | |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
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#10 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,491
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Re: Front coil spring question
For those new springs to be only a 1" drop, the wire diameter will have to be a lot larger than the old springs. I mean a lot thicker! Have to say it looks like you'll end up closer to a 4" drop.
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#11 |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
I checked the part number on the front springs, they match the 1” drop. We’ll find out soon enough. I’ll post pictures when I get it back together in a week or two.
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#12 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,491
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Re: Front coil spring question
What is the wire OD on stock vs. new springs? Also the free height?
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#13 |
Post Whore
![]() Join Date: Aug 2013
Location: anamosa iowa
Posts: 54,819
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Re: Front coil spring question
Originally Posted by robnolimit View Post
Spring rates for stock style C-10's seem high, but this is do to the A-arm ratio. Here are some stock spring rates 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
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#14 |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
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#15 | |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,491
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Re: Front coil spring question
Quote:
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Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#16 |
Post Whore
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Location: anamosa iowa
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Re: Front coil spring question
https://www.rockauto.com/en/moreinfo...187&cc=1321096 This place will give the lowest $ usually.
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#17 |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
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#18 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,491
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Re: Front coil spring question
Man, I hate to say this, but 1" shorter free length is around 1.7" at the wheel, as I recall. Along with smaller wire gauge, that spring will drop the heck out of the truck!
__________________
Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#19 |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
Well fortunately the front of the truck sat really high. I think there is plenty of room to go down.
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#20 |
Post Whore
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Location: anamosa iowa
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Re: Front coil spring question
Freakin'-A tall. Put a 4" drop in the rear and its 'gasser' city.
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#21 | |
Registered User
Join Date: Nov 2017
Location: Wasaga Beach Ontario Canada
Posts: 206
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Re: Front coil spring question
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#22 | |
Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,499
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Re: Front coil spring question
Quote:
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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#23 |
Registered User
Join Date: Oct 2012
Location: VENTURA COUNTY CALIFORNIA
Posts: 290
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Re: Front coil spring question
I would think of anything you would compensate for the weight of the driver and have it sit slightly higher. Ford did this with early Thunderbirds. There is a steel spacer above the spring on the driver side so the car rides levelish.
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#24 | |
Registered User
Join Date: Nov 2017
Location: Wasaga Beach Ontario Canada
Posts: 206
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Re: Front coil spring question
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#25 | |
Registered User
Join Date: Oct 2023
Location: Waterloo Iowa
Posts: 247
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Re: Front coil spring question
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