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#1 |
Senior Member
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Location: Harrison, Arkansas
Posts: 9,815
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Optional rear springs
I see mention from time to time, in other places on the net, that in trucks from 67-72, Chevy had coil rear springs and GMC had leaf's.
This may have already been hashed, but on all the GMC SPID's I have looked at, leaf springs are listed as an option, but I have never seen a coil spring listed as an option. Can someone show me a GMC SPID with a coil spring option?
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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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#2 | |
All about them K’s
![]() Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,392
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Re: Optional rear springs
Quote:
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's |
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#3 |
Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: Optional rear springs
Coil springs are not listed as they are standard equipment
Leafs are listed as they are optional I have 2 69 c20 truck one a gmc the other a chevy both leaf sprung |
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#4 |
Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,505
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Re: Optional rear springs
What he said ^^^^. My 68 chevy only mentions heavy springs it has coils all 4 corners. My 72
chevy custom camper list the leafs on the SPID as they were optional
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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. Last edited by LockDoc; 08-09-2020 at 10:44 PM. |
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#5 |
Senior Member
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Location: Harrison, Arkansas
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Re: Optional rear springs
I'm not trying to be a smartass (Well maybe I am.) Leon, but, show me.
I have looked at several GMC SPIDS, and like Chevrolet, leaf springs are listed as an option. That's the reason I asked to see a SPID listing a coil spring option. A friend of mine has a coil spring 72 GMC, and there is no mention of springs on the SPID.
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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. Last edited by LockDoc; 08-09-2020 at 10:45 PM. |
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#6 |
Senior Member
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Location: Harrison, Arkansas
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Re: Optional rear springs
BTW Leon, is there a truck show in KC this year?
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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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#7 |
Senior Member
![]() Join Date: May 2001
Location: Independence MO.
Posts: 7,698
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Re: Optional rear springs
The truck show in Kansas City was canceled a few days ago, Carrie from Classic parts text me to say they unfortunately decided to cancel it
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72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale |
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#8 |
Senior Member
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Location: Harrison, Arkansas
Posts: 9,815
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Re: Optional rear springs
Simply put, I want to see a GMC SPID with a coil spring option.
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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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#9 | |
Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,505
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Re: Optional rear springs
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. Last edited by 72c20customcamper; 08-09-2020 at 06:46 PM. |
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#10 | |
The Older Generation
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Location: Montezuma, Iowa
Posts: 25,518
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Re: Optional rear springs
Quote:
Special-k sez in 2016: "You will never see a SPID showing a "Coil Spring" option." LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#11 |
Senior Member
![]() Join Date: May 2001
Location: Independence MO.
Posts: 7,698
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Re: Optional rear springs
The truck show in Kansas City was canceled a few days ago, Carrie from Classic parts text me to say they unfortunately decided to cancel it
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72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale |
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#12 | |
Senior Member
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Location: Harrison, Arkansas
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Re: Optional rear springs
Quote:
The SPID lists options. GMC's with leafs always have it listed on the SPID which means they were optional. My friends truck started me thinking about this. His GMC has coil springs that are not listed on the SPID. If they were an option they would be listed, which says to me coils were standard.
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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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#13 |
Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: Optional rear springs
Yes coils on a 2 wheel drive where standard chevy and gmc
I double checked my 68 gmc spid list hd springs no list of rear coil My 69 chevy list hd rear springs and list rear leaf springs |
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#14 | |
The Older Generation
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Location: Montezuma, Iowa
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Re: Optional rear springs
Quote:
I'm just going by what the concensus has been on the the board over the years. Read this thread, you will be more confused than ever. http://67-72chevytrucks.com/vboard/s...d.php?t=701462 Some say one thing and some say another. Actually to me it doesn't make any difference whether they have coils or leafs since it isn't that hard to change them from one to the other..... I have changed two trucks from leafs to coils over the years and I am in the process of installing a '67 HO72 rear end in a '72 GMC 3/4 ton frame, and changing it from leaf spring to coils. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - Last edited by LockDoc; 08-09-2020 at 10:43 PM. |
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#15 |
Senior Member
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Location: Harrison, Arkansas
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Re: Optional rear springs
Hey Leon, it's all in fun. It makes no difference it the greater scheme of things.
Edit; That info you posted is just what I was looking for. Thanks, Leon.
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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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#16 |
Senior Member
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Location: Studio City, Calif.
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Re: Optional rear springs
We all know that longhorns came with leafs. What does the SPID on one say? If it lists "G70 R.Susp-leaf springs" then we now know that some models all came with a certain "option". If it just says "G50 Heavy rear spring" and no mention of leafs, that would make more sense. Mine didn't have a SPID so I can't say. -BA
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. |
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#17 |
Registered User
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 3,339
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Re: Optional rear springs
THanks, All!!!
I'm still learning!!! |
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#18 |
Special Order
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Location: Mt Airy, MD
Posts: 85,858
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Re: Optional rear springs
All C/30s and C3500s came with leaf springs. Coil springs were not offered on the 1Ts.
All Longhorns, C/20, C2500, C/30, and C3500 were built on the C/30-C3500 133" SRW Chassis. Only C/30-C3500s came in 133" WB. That is the 1T shortbed frame with 157" being the longbed. You will not find Coil Springs listed on any light truck SPID in 67-72. But GMCs came through with Lweaf Springs unless Coil Springs were opted. It just goes to prove you can't rely soley upon the printed word. Why was it done this way? Couldn't tell you and I'm not sure anyone can. Ask them why the 402 is listed as a 396 the second year after they were no longer used. Ask them why Sierra Grande is on many Sierra SPIDS. And ask them why options included in a trim level are listed as if they were an independent option. Hetaers came standard in all trucks. You will not find the heater listed as an option on any trucks. But we know it could be deleted. For what ever reason the US-built GMCs have the Leaf Springs listed as an option and when they have Coils they are not shown as an options. In reality those trucks are Leaf Spring delete, so no spring option listed. Now with Canadian built light trucks, C910-C930, it is another matter. Those truly were same as Chevrolet except the GMC grille and markings, such as emblems, tailgate, and horn button... same as post '72 US-builts. What I am saying is Canadian 67-69 910-930s were not offered with the V6 option or any other drivetrain feature only found in GMCs built in the USA. I believe someone will be here showing their Canadian ordering books for GMC stating Coil Springs are standard. Yup, that's because those are actually Chevrolet spec'd GMCs, not the true GMCs such as built in USA
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#19 | |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,440
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Re: Optional rear springs
Quote:
As a side topic, what does the plate below that one say? The rivets are there but that plate is gone! I never noticed that before. ![]() Added my SPID.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA Last edited by Steeveedee; 08-10-2020 at 02:15 PM. |
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#20 | |
Senior Member
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Location: Harrison, Arkansas
Posts: 9,815
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Re: Optional rear springs
Quote:
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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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#21 | ||
Active Member
![]() Join Date: Jun 2018
Location: Central Coast, CA
Posts: 126
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Re: Optional rear springs
Quote:
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G70 for 3/4 ton calls out 3-4 specific options: Dana rear axle (and larger drums), Rear HD shocks (RPO G68), 4.56 ratio with certain drive train, 2000lb springs (standard on Longhorn). I do not have anecdotal data, but it seems that Longhorns either could not come with a Dana 60 or any one of the other options included with G70, or it was base equipment and therefore not included. As for the GMC leaf vs coil debate, I have seen no documentation that supports leafs being standard equipment. In fact, advertising lit (which is not infallible) for 1971 lists both leaf and coil as optional, and neither as standard. My guess until proven otherwise is that coil was standard, but GMC as a brand (possibly catering to fleet/commercial buyers) ordered leaf suspension unless a customer was placing an individual order and specifying otherwise.
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1971 Pontiac Firebird 1971 GMC C2500 |
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#22 |
Registered User
Join Date: Jan 2016
Location: Barber City, CA
Posts: 4,786
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Re: Optional rear springs
engineering and marketing folks came together for once in their lives just to hatch this evil plot to confuse collectors for years and years - it worked!
here's a couple of longhorn SPIDs for your consideration ![]() ![]() ![]()
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I started out with nothing - and I still have most of it |
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#23 |
Senior Member
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Location: Saskatoon,SK,Canada
Posts: 2,476
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Re: Optional rear springs
In Canada you seldom see a leaf spring half ton. When you do it could be a Chev or a GMC. coils were standard. When you get to 3/4 tons I've seen more leafs than coils. I've had a bunch of trucks and parts trucks over the years. Two half tons have had leafs.
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Saskatoon, Saskatchewan Canada |
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#24 | |
Special Order
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Location: Mt Airy, MD
Posts: 85,858
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Re: Optional rear springs
Quote:
And the written word on leafs being optional on GMCs is not correct. GMC didn't order trucks, they built them. They all came through (built) with leaf spring unless coil springs were specified (ordered), although what you see in writing contradicts that. This is a case, as in other cases, where you can't go by the "data". Dealer order books state that tow hooks were only available with painted front bumper, and we know from real life experience this simply is not true.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#25 |
Active Member
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Location: Central Coast, CA
Posts: 126
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Re: Optional rear springs
So, I recently acquired a pile of GMC dealer general letters and service letters and ran across this gem. I understand that the vast majority of surviving GMCs have rear leaf suspension, but this is straight from the horse's mouth. Hopefully it clears up this great debate, at least for 1971!
As for Tow hooks on chrome bumper equipped trucks, I saw a dealer letter that, while referring to series 4500 and up, said that dealers can have the factory install Accessories (i.e., non-RPO equipment) using the Special Equipment process. Light duty trucks were covered under the COPO system, so I would speculate that some keen dealers may have used the COPO system to have the factory install tow hooks, which happen to be both an RPO and an Accessory. Seems to be no different than how Camaros were being outfitted with RPO engines not available as an RPO on that model.
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1971 Pontiac Firebird 1971 GMC C2500 |
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