max gcwr max gvwr

[chris989]

Anyone have insight into combined weights for duallys?

I am looking for a tow rig and most literature limits the trailer to 10,000. Most constructions trailers weigh 6-7 empty so any equipment puts me over the DOT limit.

anyone have OEM literature on total capacities?

Chris

[cerial]

It varies greatly depending on the drivetrain, brakes, frame, suspension and so on. I had a 84 c30 dot rated for 14,500 gvw with a 8x12 flatbed I used to grab forklifts with. Bed was dock height and cut the forklifts up right on the bed.

[Keith Seymore]

Need to know powertrain detail, right down to the rear axle ratio.

Model year would help, too.

K

[chris989]

Update,

I spoke to the "heritage dept" of Gm and they confirmed even for a ~2000 3500 truck the max trailer weight is 10,000.

The 3500HD,~2002 is just 11,500.

I think these weights are more for the warranty aspect of the truck and not the capabilities. But 10K on a crew cab dually means the truck can hardly legally tow any piece of equipment. If i decent trailer weighs 4-6 only mini skid steer or excavator cold be towed.

He said there was no way to change/update the door sticker. This is a bummer because i wanted and square body to tow a cat 259d but the unit weighs 9k plus ~5K for a trailer. I know the truck can do it, just not legally.

Chris

[Keith Seymore]

Bumper pull or gooseneck/5th wheel type?

For example, my GMT800 truck is rated 12,000 with the platform hitch but 26,000 for gooseneck/5th wheel.

That might be a way to bump up your legal towing capability.

K

[sweetk30]

and tows so much better than bumper pullin .

[chris989]

Originally Posted by Keith Seymore

Bumper pull or gooseneck/5th wheel type?

For example, my GMT800 truck is rated 12,000 with the platform hitch but 26,000 for gooseneck/5th wheel.

That might be a way to bump up your legal towing capability.

K

Where on your truck/sticker does it distinguish gooseneck/platform. I have never seen it split. I would like to pull a gooseneck tilt trailer. Most weigh ~8500 pounds push a skid steer of 9000. What is your max trailer weight?

[chris989]

I get needing to know the specifics about the driveline. I think most of the numbers are a joke.

A good example, a 2004 3/4 ton single rear wheel has a trailer weight of 15,500 for a deisel and only 10,200 for a gasser.

I think the lower numbers were for warranty and insurance purposes??? It just stink that a 80/90s truck with a updated driveline line can not get a higher rating per Idaho DOT

[Keith Seymore]

Originally Posted by chris989

Where on your truck/sticker does it distinguish gooseneck/platform. I have never seen it split. I would like to pull a gooseneck tilt trailer. Most weigh ~8500 pounds push a skid steer of 9000. What is your max trailer weight?

It's in the generic GM Heritage Center literature for my truck (it's a bit different format that the squarebody information) -

https://www.gmheritagecenter.com/gm-...tion-kits.html

Originally Posted by chris989

I get needing to know the specifics about the driveline. I think most of the numbers are a joke.

Well - as the guy that set the numbers for a few model years there - I can tell you there are a lot of internal requirements that you might not be aware of.

For example - one of the determining factors was the ability to launch up the 16% test grade when loaded to GCW. That knocks a lot of the ratings down farther than what you or I would do in real life.

You do things differently when it is just your truck, vs when you have to cover your a$$ for 15 million trucks.

K

[chris989]

Originally Posted by Keith Seymore

It's in the generic GM Heritage Center literature for my truck (it's a bit different format that the squarebody information) -

https://www.gmheritagecenter.com/gm-...tion-kits.html



Well - as the guy that set the numbers for a few model years there - I can tell you there are a lot of internal requirements that you might not be aware of.

For example - one of the determining factors was the ability to launch up the 16% test grade when loaded to GCW. That knocks a lot of the ratings down farther than what you or I would do in real life.

You do things differently when it is just your truck, vs when you have to cover your a$$ for 15 million trucks.

K

I understand about the warranty and liability aspect. I wish there was a way to update a unit if it has been restored/modified.

For example, i did a 89 burb resto. As OEM it could not pull anything. It could barely pull away from a red light it was such a dog. It now has a fresh motor, cam, exhaust, ignition, 456 gears, 4L80 trans, bagged with new rear springs from a 3500. The thing tows like a dream.

I would much rather invest in an older truck than drop $$$$ on a new one. Plus i do not have all the emission/computer stuff to deal with.