Why's it called a 2 ton???

[Nobighurry]

So my 1970 C60 has a 2 ton designation - but why? The doggone thing ways 10k pounds and payload is 14000. So where does the 2 ton come from? How much the tire weighs??? HAHA

[rpmerf]

14K - 10K = 4k = 2 tons. 14K is the total weight of vehicle and payload

[C10 - C90 Bill]

Actually, I believe his GVW is 24,000.

But good question, I've always wondered that myself.

Even a 1-Ton. My old '64 C-30 weighed 5,000 and carried 5,000.

Nothing 1-Ton about it, lol.

[Nobighurry]

You are correct my Va based friend. My gvw is 24000. Kinda goofy telling people I have a 2 ton truck but I have no idea why it is called that. I just change the subject.

[C10 - C90 Bill]

Even my 9500. I would not refer to it as a 3-Ton, I would just say Tandem or sometimes Twin Screw Tandem.

But for some reason, 1-Ton and 2-Ton names stuck.

[1976gmc20]

Well, it probably started out that way, then as years went by the empty weight and load capacity increased but the nomenclature stayed the same:

C-10 "half ton"
C-20 "three quarter ton"
C-30 "one ton"
C-40 "ton and a half"
C-50 "two ton"
C-60 "two and a half ton"
etc etc etc

My old C-50 GVW was 16K# but I think it only weighed about 6K# cab and chassis. Geez, half ton pickups weigh about that much these days.

In those days, there was no GCVW so I could safely ignore that

[Killer Bee]

I get asked this question a lot, here ya go

https://en.m.wikipedia.org/wiki/Truck_classification

[C10 - C90 Bill]

Interesting link.

Ton Rating well explained.

Thanks for posting it.

[special-K]

Why do they call it a 2 x 4 when they measure 1 1/2" x 3 1/2"?

It's just a nominal term for identification purposes. It's not the payload, but it's simpler to say. Plus, within the same series the payload can differ. Even a 1/2t pickup has different GVWs by engine. I had a SRW K3500 regular cab w/bucket seats with a 9,200 GVW. DRW would have given it 10,000 GVW. That's an 800# difference. How much more weight do you think DRWs, crew cab, carrying 2-4 more men would add? Mine would have more payload. Even GVW is relevant.

[Gokart Mozart]

So my 72 C50 is considered a class 7 because it has a 31,000 lb rating, 8,000 front springs and 23,000 rear?

[Nobighurry]

My c60 have 24k rears and 9k fronts. My gvw is 24k which is what the dot is going to hold me to. I'd never try to go over the 24k.

[C10 - C90 Bill]

Originally Posted by Gokart Mozart

So my 72 C50 is considered a class 7 because it has a 31,000 lb rating, 8,000 front springs and 23,000 rear?

If your truck was factory built that way, it should have been a C-60. I never heard of a C-50 with that much GVW.

[Airdirect]

My C70 has a GVW of 25,160, 9000 front, 16,160 rear. The rear axle is a Eaton 17201 which is capable of 23,000 lbs.

http://67-72chevytrucks.com/vboard/s...d.php?t=721374

[Gokart Mozart]

Originally Posted by C10 - C90 Bill

If your truck was factory built that way, it should have been a C-60. I never heard of a C-50 with that much GVW.

I was told it was a 50. could be a 60. what do you think?

[Nobighurry]

Originally Posted by Gokart Mozart

I was told it was a 50. could be a 60. what do you think?

It's a c50. First number in serial number designates the size.

[Nobighurry]

Originally Posted by Gokart Mozart

I was told it was a 50. could be a 60. what do you think?

You should have a metal plate on drivers side door jam that designates the gvw.

[jerry.t]

kinda on the same subject, why are there wide fender c50's, and narrow fender c60's ? seems like a 60 has a higher GVW than a 50. which is why the wider fenders and axles are used. but i am seeing them in either option

[C10 - C90 Bill]

It looks like you do have a C-50, but to go in deeper detail, it seems like you have a 5000 Lb Front Axle (F-050) with 8000 Lb Springs on it. What does your GVW Plate state?

[C10 - C90 Bill]

Nobighurry, looks like we are both posting at the same time, lol. One minute apart on the last 3.

[Nobighurry]

Yet again, great minds think alike.

[Gokart Mozart]

Ok. Guess it's "only" 24,000 gvwr.

[Nobighurry]

Originally Posted by Gokart Mozart

Ok. Guess it's "only" 24,000 gvwr.

Yep. I work my truck and 24k gvw is plenty. I wouldn't want any more with the old style single stage master cylinder. Braking is important.

[Gokart Mozart]

Working on lowering weight capacity and increasing stopping capability.

[1976gmc20]

Originally Posted by Gokart Mozart

Ok. Guess it's "only" 24,000 gvwr.

Yeah, you can't add the front and rear axle ratings together to get the GVW.

I think my old C-50 was only 16K GVW but it's long gone now. Not sure how that was calculated, but it just had a 305 V-6 and a 4 speed so that might have figured into it. I'm not going to say how much I hauled with it and the pole trailer since I never had the rig weighed, but I'm pretty sure it was up in the 20K+++ range

[Gokart Mozart]

THE ROLE OF GVWR AND GCWR IN SPECIFYING WORK TRUCKS
By Bob Raybuck, NTEA Director of Technical Services

This article was published in the February 2018 edition of NTEA News.

Often, gross vehicle weight rating (GVWR) and gross vehicle weight (GVW) are thought to be the same, but they are not. A truck’s GVWR is the maximum weight rating established by the chassis manufacturer. GVW is the total weight of the truck and payload at a point in time.

There’s a common misconception that a truck’s GVWR is determined by adding gross axle weight ratings (GAWRs) together for all axles. Although this was a common way of calculating GVWR many years ago, it’s no longer an accurate method. The chassis manufacturer task of establishing a vehicle GVWR is much more difficult today due to advancement of safety system standards and how vehicles meet these requirements. This is why many trucks have a GVWR much lower than the combined axle ratings. It is not uncommon for a truck with a GVWR of 19,500 pounds to have a front axle rated at 7,500 pounds and a rear axle rated at 14,700 pounds. Safety standards that apply to braking, vehicle stability, and chassis manufacturer internal standards for durability, dynamic stability and handling can restrict GVWR even though the sum of the axle ratings exceeds 22,000 pounds. In this instance, the OEM set the GVWR at 19,500 pounds based on test results and vehicle dynamic performance to ensure a safe, reliable truck.

A specific vehicle’s GCWR is based on parameters established by chassis manufacturers. The manufacturer makes an assessment in accordance with SAE International test protocols, determining maximum GCWR. Additionally, the OEM runs stringent tests based on internal requirements which may include testing total GCWR braking capability using only the towing vehicle chassis braking system. GCWR is the total weight of the truck pulling the trailer and the trailer itself. The truck chassis dictates proper GCWR for safe operation of the combination truck and trailer.

When end users and fleets are looking to either purchase or specify the proper chassis for their needs, different driver qualifications and regulations are part of the process. A key driver qualification is the commercial driver’s license rule, better known as CDL. Many fleets prefer to specify their chassis in a way that allows drivers without a CDL to operate their vehicles. Federal CDL requirements help clarify what’s considered a non-CDL truck and how GVWR comes into play. Each individual state may have more stringent CDL licensing requirements.

However, every state must follow federal requirements as a baseline. One element in federal CDL operator requirements is a vehicle’s GVWR. The federal requirement specifies that, when a vehicle has a GVWR of 26,000 pounds or less, the operator does not need a CDL. However, this does not mean the truck GVW can be loaded above the GVWR of 26,000 pounds and operated by a non-CDL driver. Federal requirements state the GVW must, in addition, be 26,000 pounds or less. CDL requirements become more confusing when the vehicle is towing a trailer.

more:http://www.ntea.com/NTEA/Member_bene...rk_trucks.aspx


one possibility is they wanted to keep the truck under cdl class ratings.