Factory coil overloads? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gotchevys? · 12-15-2006, 06:30 PM

I have recently aquired another Chevy. It is a 67 lwb 2wd. This is 6th truck of this style I have owned but I have never seen coil spring overloads. Check out the picture. Were these a factory option or an aftermarket part? I assume they are aftermarket because I dont see them listed on the options list in the glove box.

1969k10stepside · 12-15-2006, 06:32 PM

An option,my old 71 C10 had them.IIRC it may be listed in the glovebox,cant remember.Trucks gone and its been to long.
Welcome to the site BTW

Texasdeere · 12-15-2006, 07:19 PM

Those look original to me. I have a set of aftermarket ones on my 72 that come in from the front side.

QKENUF4U · 12-15-2006, 07:25 PM

im thinking original/option since i have those same springs/overloads but they are not on my truck.

faribran · 12-15-2006, 07:26 PM

my dad's 67 was ordered and came with heavy duty coils in the form of an extra coil.... nothing like what you have here... (not saying those were not an option)

centsless · 12-15-2006, 07:36 PM

Those appear to be original. I have had a truck with them. Notice the reinforcement plate riveted to the frame. Aftermarkets would be bolted on.

68shortfleet · 12-15-2006, 10:06 PM

I had those same overload on a 72 c-10 suburban about ten years ago. Had to remove them when i lower it with 4" coils inthe rear.

Jason

FarmTruk · 12-15-2006, 11:48 PM

Those were a factory option. I have an old '67 model year ad that shows these installed on a frame. Not a great pic, and lotsa other members may have this, but I hope it helps.

CPNEJR · 12-15-2006, 11:55 PM

it looks to rivited so it was done at factory. and it is and original option.

faribran the "heavy duty" coils for a 1/2 ton were 3/4 ton coils

Robert1970C20rstbukt · 12-16-2006, 12:29 AM

Yep they're from the factory are bolted to the frame, not riveted. I just pulled a set from a '72 C20 and there were 6 bolts holding each bracket on the frame.

1969k10stepside · 12-16-2006, 12:38 AM

Robert1970C20rstbukt is correct.The overloads are BOLTED to the frame,not riveted.On all the parts trucks I have brought home they have all had the overload springs so I would assume they are pretty common on 67-72s with coil springs.

chevyc1068 · 12-16-2006, 12:02 PM

Yep they are an option. My pickup's glove box lists overload springs and heavy duty rear coil springs. And yet the GVW is still only 5000lbs????

gotchevys? · 12-16-2006, 01:54 PM

Thanks for all the input guys. This truck has heavy duty springs listed on the options list, but it appears to bet the coils. The 3 center coils appear to be touching, not sure how that is supposed to work. I also bought a 68 lwb 2wd at the same time as I bought this one it also had heavy duty springs listed but no overloads. The coils also looked the same as the 67.

Longhorn Man · 12-16-2006, 06:28 PM

your coils are OK, they are a 2 stage spring.
Those overloads could be a dealer installed option...same P/N as the RPO option. Same part, just added a\fter the purchase.

centsless · 12-16-2006, 07:11 PM

Quote:

Originally Posted by 1969k10stepside

Robert1970C20rstbukt is correct.The overloads are BOLTED to the frame,not riveted.On all the parts trucks I have brought home they have all had the overload springs so I would assume they are pretty common on 67-72s with coil springs.

They must have been available as a factory (riveted) or dealer installed (bolted) option. The two trucks that I have owned, the brackets were riveted to the frame.

krue · 12-16-2006, 08:10 PM

Mine look nothing like that, they bolt to the frame with a square u-bolt and are on top of the trailing arms.

Texasdeere · 12-16-2006, 10:50 PM

Quote:

Originally Posted by krue

Mine look nothing like that, they bolt to the frame with a square u-bolt and are on top of the trailing arms.

Krue, That is exactly what I have on my 72. They look aftermarket big time!

GREASEMONKEY72 · 12-17-2006, 12:56 AM

they were factory my truck also has them and if i remember correctly the sticker says "overload spring" however my truck is the only one ive seen personally that has them and my trade school shop teacher had never seen them before till he saw them on my truck and he had a 72 (4x4 tho) many moons ago

-steven

**Boog** · 12-17-2006, 08:42 AM

Looks like OE to me. My dad had a 72 wrecker built on a camper special frame. Coils with the helper springs just like that.

12-15-2006, 06:30 PM	#1
gotchevys? Registered User Join Date: Dec 2006 Location: Virginia Posts: 118	Factory coil overloads? I have recently aquired another Chevy. It is a 67 lwb 2wd. This is 6th truck of this style I have owned but I have never seen coil spring overloads. Check out the picture. Were these a factory option or an aftermarket part? I assume they are aftermarket because I dont see them listed on the options list in the glove box. Attached Images

12-15-2006, 06:32 PM	#2
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,020	Re: Factory coil overloads? An option,my old 71 C10 had them.IIRC it may be listed in the glovebox,cant remember.Trucks gone and its been to long. Welcome to the site BTW Last edited by 1969k10stepside; 12-15-2006 at 06:39 PM.

12-15-2006, 07:19 PM	#3
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: Factory coil overloads? Those look original to me. I have a set of aftermarket ones on my 72 that come in from the front side.

12-15-2006, 07:25 PM	#4
QKENUF4U Senior Member Join Date: Jan 2005 Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA Posts: 2,097	Re: Factory coil overloads? im thinking original/option since i have those same springs/overloads but they are not on my truck.

12-15-2006, 07:26 PM	#5
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: Factory coil overloads? my dad's 67 was ordered and came with heavy duty coils in the form of an extra coil.... nothing like what you have here... (not saying those were not an option)

12-15-2006, 07:36 PM	#6
centsless sufficiently talented fool Join Date: Jun 2006 Location: Forest Hill, MD Posts: 2,231	Re: Factory coil overloads? Those appear to be original. I have had a truck with them. Notice the reinforcement plate riveted to the frame. Aftermarkets would be bolted on. __________________ "it's impossible to be surrounded by idiots when you are part of the circle" 2003 Suburban 2002 Pontiac Montana 1981 Corvette 1966 Impala Convertible Click here to support the board

12-15-2006, 10:06 PM	#7
68shortfleet Registered User Join Date: Oct 2006 Location: Dundee, Oregon Posts: 311	Re: Factory coil overloads? I had those same overload on a 72 c-10 suburban about ten years ago. Had to remove them when i lower it with 4" coils inthe rear. Jason

12-15-2006, 11:48 PM	#8
FarmTruk In Memoriam... Join Date: Nov 2006 Location: Wallburg, NC Posts: 1,216	Re: Factory coil overloads? Those were a factory option. I have an old '67 model year ad that shows these installed on a frame. Not a great pic, and lotsa other members may have this, but I hope it helps. Attached Images __________________ '68 C10 SWB 307ci 2BBL *FarmTruk Pics Here* *"You know, doing what is right is easy. The problem is knowing what is right."*

12-15-2006, 11:55 PM	#9
CPNEJR Registered User Join Date: Sep 2003 Location: Franconia,N.H. Posts: 1,029	Re: Factory coil overloads? it looks to rivited so it was done at factory. and it is and original option. faribran the "heavy duty" coils for a 1/2 ton were 3/4 ton coils __________________ (Only) Member of the CPNE Fan Club Aint that the truth 67 C-10 350 with 3-speed tranny and 308 gears swb step 82 Z28 Camaro 355 small block over 350 hp and a borg warner super t-10 (blown engine) 72 Chevy K20 Suburban (future project) 70 Chevy K20 now 68 GMC K2500 2003 Chevy 2500hd ccsb 4X4 (daily driver)

12-16-2006, 12:29 AM	#10
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Re: Factory coil overloads? Yep they're from the factory are bolted to the frame, not riveted. I just pulled a set from a '72 C20 and there were 6 bolts holding each bracket on the frame. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

12-16-2006, 12:38 AM	#11
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,020	Re: Factory coil overloads? Robert1970C20rstbukt is correct.The overloads are BOLTED to the frame,not riveted.On all the parts trucks I have brought home they have all had the overload springs so I would assume they are pretty common on 67-72s with coil springs. Last edited by 1969k10stepside; 12-16-2006 at 12:38 AM.

12-16-2006, 12:02 PM	#12
chevyc1068 Registered User Join Date: Oct 2006 Location: Murdock, Kansas Posts: 147	Re: Factory coil overloads? Yep they are an option. My pickup's glove box lists overload springs and heavy duty rear coil springs. And yet the GVW is still only 5000lbs???? __________________ 1968 C-10 longbed, 307 V8, 4spd- currently under construction

12-16-2006, 01:54 PM	#13
gotchevys? Registered User Join Date: Dec 2006 Location: Virginia Posts: 118	Re: Factory coil overloads? Thanks for all the input guys. This truck has heavy duty springs listed on the options list, but it appears to bet the coils. The 3 center coils appear to be touching, not sure how that is supposed to work. I also bought a 68 lwb 2wd at the same time as I bought this one it also had heavy duty springs listed but no overloads. The coils also looked the same as the 67.

12-16-2006, 06:28 PM	#14
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Factory coil overloads? your coils are OK, they are a 2 stage spring. Those overloads could be a dealer installed option...same P/N as the RPO option. Same part, just added a\fter the purchase.

12-16-2006, 08:10 PM	#16
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: Factory coil overloads? Mine look nothing like that, they bolt to the frame with a square u-bolt and are on top of the trailing arms. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"



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12-17-2006, 12:56 AM	#18
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: Factory coil overloads? they were factory my truck also has them and if i remember correctly the sticker says "overload spring" however my truck is the only one ive seen personally that has them and my trade school shop teacher had never seen them before till he saw them on my truck and he had a 72 (4x4 tho) many moons ago -steven __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

12-17-2006, 08:42 AM	#19
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,441	Re: Factory coil overloads? Looks like OE to me. My dad had a 72 wrecker built on a camper special frame. Coils with the helper springs just like that. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

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