73-87 1-ton capacities - The 1947 - Present Chevrolet & GMC Truck Message Board Network

big_r101 · 11-16-2010, 03:14 AM

didnt reall know what else to call the thread but whatever, i was wondering of the 73-87 1 ton which year would be the heaviest duty? (like payload capacities, axles, etc.)

Number21 · 11-16-2010, 05:04 AM

They may have gotten a bit heavier towards the end of their run, but I would think most 73-87 1 tons are about the same. They can vary within the model year from about 8,800GVW to over 10,0000GVW. In most 1 tons I believe you will find the 14 bolt full floater rear end.

Interestingly my '73 3/4 ton is only rated 800lbs less than my '79 1 ton. (8200 vs 9000 GVW)

GM72K10 · 11-16-2010, 06:52 AM

Some of the "1 ton" Cab and Chassis actually are 11,000 gvw.

GCncsuHD · 11-16-2010, 08:08 AM

Quote:

Originally Posted by Number21

They may have gotten a bit heavier towards the end of their run, but I would think most 73-87 1 tons are about the same. They can vary within the model year from about 8,800GVW to over 10,0000GVW. In most 1 tons I believe you will find the 14 bolt full floater rear end.

Interestingly my '73 3/4 ton is only rated 800lbs less than my '79 1 ton. (8200 vs 9000 GVW)

Like he said it will vary depending on 4wd/2wd, cab/bed configuration, SRW/DRW, etc. Also 14 bolt FF came in later model years, earlier ones had the Dana 70 rear.

babyJay · 11-16-2010, 11:01 AM

Quote:

Originally Posted by GCncsuHD

Like he said it will vary depending on 4wd/2wd, cab/bed configuration, SRW/DRW, etc. Also 14 bolt FF came in later model years, earlier ones had the Dana 70 rear.

As mentioned the above factors all affect the capacity of the truck. If you're looking to Max capacity you'll have to roll with a dually.

iroc12valve · 11-16-2010, 07:51 PM

I have a 1991 V3500 same as an 86 k3500 (same idea as the burbans/k5s)
dana 60 front 14 bolt rear factory overload springs.
its set for 9900#

EDIT its an SRW truck and came with 16's not 16.5's

GCncsuHD · 11-16-2010, 08:44 PM

Quote:

Originally Posted by iroc12valve

I have a 1991 V3500 same as an 86 k3500 (same idea as the burbans/k5s)
dana 60 front 14 bolt rear factory overload springs.
its set for 9900#

EDIT its an SRW truck and came with 16's not 16.5's

I'll have to check the GVWR on my 78 K30 Dually tonight when I head out to the gym, it's pulling DD duties right now

big_r101 · 11-16-2010, 09:43 PM

well i was most likely goin with a crew cab dually 4x4, preferably an 80s one because i like the style of the front end and interiors, and at some point i was goin to upgrade the rear to a dana 80 with 3 inch wide leafs, probly do that after i get the money to do a diesel swap

GCncsuHD · 11-27-2010, 04:51 PM

Quote:

Originally Posted by GCncsuHD

I'll have to check the GVWR on my 78 K30 Dually tonight when I head out to the gym, it's pulling DD duties right now

Checked mine, it's 10,000 GVWR

K30_dump · 11-28-2010, 01:58 AM

Hello,

My '84 K30 cab-and-chassis has a GVW of 11,000 lbs. For what its worth, the cab-and-chassis frames were slightly heavier than the K30 pickup frames (either SRW or DRW pickups). Channel height was the same, but rails were approximately .030" thicker. They also have a heavy crossmember for the rear cab mounting, as opposed to the individual mounting brackets found on the pickup frames. Just something to think on...

Hope this helps,

Joe
Posted via Mobile Device

gregg72340 · 11-28-2010, 07:15 PM

A friend of mine just bought a 79 GMC High Sierra 35 1 ton ex firetruck and I dont know much about it other than it was GVWR at 27,500!!! We have no idea why just thought it was very odd

GCncsuHD · 11-28-2010, 07:56 PM

Quote:

Originally Posted by gregg72340

A friend of mine just bought a 79 GMC High Sierra 35 1 ton ex firetruck and I dont know much about it other than it was GVWR at 27,500!!! We have no idea why just thought it was very odd

Something sounds off there. Sure it didn't possibly have a door plate off a C60 or something? The GCWR should not even be that high. Maybe someone messed up the door at some point and replaced it with one from a junkyard medium duty truck.

If that was true, he would have to have his CDL's to even drive the truck.

gregg72340 · 11-28-2010, 08:40 PM

Quote:

Originally Posted by GCncsuHD

Something sounds off there. Sure it didn't possibly have a door plate off a C60 or something? The GCWR should not even be that high. Maybe someone messed up the door at some point and replaced it with one from a junkyard medium duty truck.

If that was true, he would have to have his CDL's to even drive the truck.

Oh yeah definitly think it is weird, so I dont think he has figured that outyet, just seems really odd thats what was listed on the title, its was nothin special just a one ton fire company air truck

78customdeluxe · 11-28-2010, 08:45 PM

My 88 2wd crew cab dually come from the factory at 10,000 pound, but I think I read that the crew cab dually 4x4 was 11,000 from the factory. Then I have a 79 k-30 single wheel that is 9200lb, which is ironicly the same as my old truck I had, an 82 3/4 4x4 with the semi-floater 14 bolt...

70BLAZERX2 · 11-28-2010, 08:52 PM

My rollback is made on a 1977 GMC Motor Home Chassis...GVW is 14,500

19.5 wheels and 4 wheel disc brakes..454 th400 and gets the job done..truck is 7,000lb's empty..Have been on the scales at 16,800 loaded..

frame is doubled from factory over rear axle.

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big_r101 · 12-10-2010, 01:00 AM

very nice rollback you got there, like the color and stacks

*78 Chevyrado* · 12-10-2010, 09:50 AM

This should answer all your questions.

GM Heritage Center

GM72K10 · 12-10-2010, 06:15 PM

Quote:

Originally Posted by gregg72340

A friend of mine just bought a 79 GMC High Sierra 35 1 ton ex firetruck and I dont know much about it other than it was GVWR at 27,500!!! We have no idea why just thought it was very odd

Is that the one off CL for $900.00?

MofoG23 · 12-11-2010, 11:35 AM

Quote:

Originally Posted by 78 Chevyrado

This should answer all your questions.

GM Heritage Center

Awesome link!!!

big_r101 · 12-11-2010, 03:44 PM

yea i checked that place the other night and found ALOT of usefull info on there

11-16-2010, 03:14 AM	#1
big_r101 Registered User Join Date: May 2010 Location: Parker,CO Posts: 110	73-87 1-ton capacities didnt reall know what else to call the thread but whatever, i was wondering of the 73-87 1 ton which year would be the heaviest duty? (like payload capacities, axles, etc.) __________________ 1998 Ford Ranger FX4, 3.0 V6, 5 speed manual 1999 Ford Explorer, 4.0 V6, 5 speed auto O.D. 2005 Chevy Colorado, 3.5l inline 5, 4 speed auto 2001 Gmc sonoma 4.3l V6, 4 speed auto soon to have 1981-88 k30

11-16-2010, 05:04 AM	#2
Number21 Registered User Join Date: Aug 2009 Location: Oregon Posts: 611	Re: 73-87 1-ton capacities They may have gotten a bit heavier towards the end of their run, but I would think most 73-87 1 tons are about the same. They can vary within the model year from about 8,800GVW to over 10,0000GVW. In most 1 tons I believe you will find the 14 bolt full floater rear end. Interestingly my '73 3/4 ton is only rated 800lbs less than my '79 1 ton. (8200 vs 9000 GVW) __________________ '73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville. Last edited by Number21; 11-16-2010 at 05:05 AM.

11-16-2010, 06:52 AM	#3
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,483	Re: 73-87 1-ton capacities Some of the "1 ton" Cab and Chassis actually are 11,000 gvw. __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck

11-16-2010, 07:51 PM	#6
iroc12valve Registered User Join Date: Jun 2010 Location: niagara, ontario Posts: 109	Re: 73-87 1-ton capacities I have a 1991 V3500 same as an 86 k3500 (same idea as the burbans/k5s) dana 60 front 14 bolt rear factory overload springs. its set for 9900# EDIT its an SRW truck and came with 16's not 16.5's __________________ 1991 V3500 350TBI/4l80/205 D60/14bff - Crew long 1987 IrocZ-28 525 horse/567 Lb Tq 383 1976 K30 on 39.5s One wheel drive thanks to a np203 and some K5's lol Last edited by iroc12valve; 11-16-2010 at 07:52 PM. Reason: additional info

11-16-2010, 09:43 PM	#8
big_r101 Registered User Join Date: May 2010 Location: Parker,CO Posts: 110	Re: 73-87 1-ton capacities well i was most likely goin with a crew cab dually 4x4, preferably an 80s one because i like the style of the front end and interiors, and at some point i was goin to upgrade the rear to a dana 80 with 3 inch wide leafs, probly do that after i get the money to do a diesel swap __________________ 1998 Ford Ranger FX4, 3.0 V6, 5 speed manual 1999 Ford Explorer, 4.0 V6, 5 speed auto O.D. 2005 Chevy Colorado, 3.5l inline 5, 4 speed auto 2001 Gmc sonoma 4.3l V6, 4 speed auto soon to have 1981-88 k30

11-28-2010, 01:58 AM	#10
K30_dump Registered User Join Date: Oct 2007 Location: Pennsylvania Posts: 164	Re: 73-87 1-ton capacities Hello, My '84 K30 cab-and-chassis has a GVW of 11,000 lbs. For what its worth, the cab-and-chassis frames were slightly heavier than the K30 pickup frames (either SRW or DRW pickups). Channel height was the same, but rails were approximately .030" thicker. They also have a heavy crossmember for the rear cab mounting, as opposed to the individual mounting brackets found on the pickup frames. Just something to think on... Hope this helps, Joe Posted via Mobile Device

11-28-2010, 07:15 PM	#11
gregg72340 Registered User Join Date: May 2010 Location: ambler, pa Posts: 325	Re: 73-87 1-ton capacities A friend of mine just bought a 79 GMC High Sierra 35 1 ton ex firetruck and I dont know much about it other than it was GVWR at 27,500!!! We have no idea why just thought it was very odd __________________ Just would like the snow to stop so I can actually work on my truck!!!!!!!!!!!

11-28-2010, 08:45 PM	#14
78customdeluxe Registered User Join Date: Dec 2002 Location: Upper Sandusky Ohio Posts: 72	Re: 73-87 1-ton capacities My 88 2wd crew cab dually come from the factory at 10,000 pound, but I think I read that the crew cab dually 4x4 was 11,000 from the factory. Then I have a 79 k-30 single wheel that is 9200lb, which is ironicly the same as my old truck I had, an 82 3/4 4x4 with the semi-floater 14 bolt... __________________ 88 Crewcab Dually 5.9 Cummins, 5306 Eaton 6-speed, converted 4x4 w/52's up front, 90 front clip(parting out) 1986 ElCamino (needs motor) 1970 C30(future service truck for my ag-equipment repair business) 1970 CST10(parting out and partial donor for the '70 C30) 2000 GMC 1500 ext cab sb, z71, 5.3 loaded auto

11-28-2010, 08:52 PM	#15
70BLAZERX2 Registered User Join Date: Jan 2010 Location: GREENEVILLE TENNESSEE Posts: 1,310	Re: 73-87 1-ton capacities My rollback is made on a 1977 GMC Motor Home Chassis...GVW is 14,500 19.5 wheels and 4 wheel disc brakes..454 th400 and gets the job done..truck is 7,000lb's empty..Have been on the scales at 16,800 loaded.. frame is doubled from factory over rear axle. Last edited by 70BLAZERX2; 11-28-2010 at 08:54 PM.

12-10-2010, 01:00 AM	#16
big_r101 Registered User Join Date: May 2010 Location: Parker,CO Posts: 110	Re: 73-87 1-ton capacities very nice rollback you got there, like the color and stacks __________________ 1998 Ford Ranger FX4, 3.0 V6, 5 speed manual 1999 Ford Explorer, 4.0 V6, 5 speed auto O.D. 2005 Chevy Colorado, 3.5l inline 5, 4 speed auto 2001 Gmc sonoma 4.3l V6, 4 speed auto soon to have 1981-88 k30

12-10-2010, 09:50 AM	#17
78 Chevyrado Account Suspended Join Date: Dec 2007 Location: Unnapreciative, Trollville Posts: 2,079	Re: 73-87 1-ton capacities This should answer all your questions. GM Heritage Center

12-11-2010, 03:44 PM	#20
big_r101 Registered User Join Date: May 2010 Location: Parker,CO Posts: 110	Re: 73-87 1-ton capacities yea i checked that place the other night and found ALOT of usefull info on there __________________ 1998 Ford Ranger FX4, 3.0 V6, 5 speed manual 1999 Ford Explorer, 4.0 V6, 5 speed auto O.D. 2005 Chevy Colorado, 3.5l inline 5, 4 speed auto 2001 Gmc sonoma 4.3l V6, 4 speed auto soon to have 1981-88 k30

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