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GCVW
Gross Combined Vehicle Weight (GCVW) is the total combined weight of a fully loaded vehicle, including passengers, payload and everything in tow.
GVW
Gross Vehicle Weight (GVW) is the total weight of a fully loaded vehicle, including passengers and payload – but excluding all towing.
GTW
Gross Trailer Weight (GTW) is the total weight of the trailer plus all the cargo in it.
Curb Weight
The weight of a vehicle without any passengers or cargo, but including all necessary fuel, fluids and standard equipment.
Axle Ratio
The ratio between the revolutions per minute of the driveshaft and the rear axle. In general, a higher number offers more towing power; a lower number offers better engine efficiency. How does axle ratio affect my capability?
Trailer Tongue Weight
The downward force exerted on the hitch ball by the trailer coupler. In most cases, it should fall between 10 to 25 percent of GTW. Trailer tongue weight must be accounted for in total payload.
Hitch Assembly
The hitch assembly is mounted to the tow vehicle (most often to the vehicle frame) and includes a hitch receiver, ball mount adapter, hitch ball and wiring harness.
Gooseneck Hitch
A Class V hitch mounted in the bed of a pickup truck, over the rear axle. The trailer connects to a ball socket with a pivoted coupling arm.
Fifth-Wheel Hitch
A heavy-duty trailer hitch that mounts inside the bed of a pickup truck. Instead of using a ball hitch, the trailer attaches via a coupling king pin that locks into a large horseshoe-shaped plate.
Locking Differential
A locking differential restricts the rotational speed of both wheels on an axle. Compared to open differentials, locking differentials are designed to offer increased traction on uneven surfaces.
RamBox
The RamBox Cargo Management System is drainable, waterproof, lighted and lockable storage space. It's available in Light Duty and Heavy Duty models, on all 5'7" and 6'4" beds and it is exclusive to Ram Trucks.
Trailers
Kayak trailer: 220 pounds
Car trailer: 2,800 pounds
Boat trailer: 300 – 1,512 pounds
Horse trailer: 2,400 pounds
(unloaded)
Boats
Canoe / kayak: 50 pounds
Motorboat: 2,000 pounds
Sailboat: 7,000 pounds
Cars
Racecar: 1,600 – 3,500 pounds
Sedan: 3,000 pounds
Station wagon: 3,600 pounds
Pickup truck: 5,500 pounds
RVs
Fifth-wheel trailers:
19,000 pounds (3,126 pounds trailer tongue weight)
Travel trailer:
5,000 – 12,000 pounds
Camping trailer:
3,000 pounds
Truck camper:
3,500 pounds (unloaded)
Construction Equipment
Cement mixer (6 cubic feet):
670 pounds
Cement mixer (1 cubic yard):
7,000 pounds
Stump grinder:
1,450 pounds
Building Materials
Plywood: 3 pounds / square foot
per inch of thickness
Gravel: 3,400 pounds / yard
Cement mix: 80 pounds / bag
Mulch: 500 pounds / yard
Sand: 2,600 pounds / yard
Pavers: 3,170 pounds / pallet
(624 pavers)
Upfits
Rollback: 1,500 pounds
Stake bed: 1,500 pounds
Cherry picker: 2,000 – 5,000 pounds
RAM 1500
RAM 2500 / 3500
RAM CHASSIS CAB
RAM VAN
Select Vehicle Spec Sheet

5-Foot 7-Inch Box
If you want to reach your vehicle's maximum towing capacity, you'll need to minimize your vehicle's payload. A truck with a shorter box length also has a lower curb weight, which can help you squeeze a little more power out of your engine.
6-Foot 4-Inch Box
With a longer box, you'll be able to handle payload with greater volume and greater mass. The 6-foot 4-inch box is the perfect compromise between ultimate towing and maximum payload capability.
8-Foot Box
The bigger the box, the bigger the cargo. But the real advantage of an 8-foot box is increased towing capacity. With a longer box length, you’ll be able to safely install a fifth-wheel hitch†, which will greatly increase your towing options.
Regular Cab
Seats only three passengers, for ultimate towing and payload capability. By limiting the number of passengers, more of your vehicle's GCVW can be devoted to towing / payload.
Quad Cab®
Seats up to six, with limited legroom. A good balance of passenger comfort and greater towing / payload capacity. Only available on Light Duty.
Crew Cab
Seats up to six, with plenty of legroom. The Crew Cab is built on a heavier frame, which increases your vehicle's curb weight and plays a role in your overall GCVW.
Mega Cab®
Seats up to six, with maximum legroom. The Mega Cab is built on the heaviest available frame, which increases your vehicle's curb weight and plays a role in your overall GCVW. Only available on Heavy Duty.
Van
Seats up to two, with length and width capacity to provide ample covered cargo storage for safe, dry transportation. Towing capacity is up to 3,600 pounds and it is compatible with the Class II trailer hitch.
Automatic Transmission
With an automatic transmission, the vehicle automatically shifts gears as needed. This increases engine efficiency, and allows the driver to focus on maintaining a safe towing situation.
Manual Transmission
Driving with a manual transmission is preferable when driving on uneven terrain, or when towing extremely heavy cargo. By letting the driver select the appropriate gear, manual transmission vehicles can also offer improved pulling power.
Two-Wheel Drive
A two-wheel drive vehicle sends power to only two of the four wheels. The curb weight of a 4x2 vehicle is generally lighter than a comparable 4x4, which translates to slightly higher towing / payload capability.
Four-Wheel Drive
A four-wheel drive vehicle sends power to all four wheels. 4x4 vehicles are generally slightly heavier than 4x2 vehicles, but they offer greater control while driving on slick or uneven surfaces.
In general, a higher axle ratio offers more towing power
and quicker acceleration; while a lower axle ratio offers better engine efficiency and quieter running.
The axle ratio describes the relationship between the driveshaft revolutions per minute and the rear axle's revolutions per minute. For example, an axle ratio of 4.1:1 means the small pinion gear at the end of the driveshaft must rotate 4.1 times for every single rotation of the rear axle.
Finding your ideal axle ratio will be a compromise. You want a ratio that will give you good towing power without handicapping your non-towing performance too severely. By determining how much weight you'll be towing and how often you'll be towing it, you'll be able to find a ratio that will maximize both power and engine efficiency.
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