The Ram Chassis Cab exists for customers who want to combine the rugged Ram with a custom bed or storage compartment in place of the standard pickup bed. Available only as a “dualie” heavy duty model with four rear wheels, the Chassis Cab comes in a dizzying array of trim, cab and wheelbase configurations.
The primary engine for the Chassis Cab is the venerable 6.7-liter Cummins turbo diesel inline-six cylinder. This mill, which can be paired with six speed transmissions of either the manual or automatic variety, produces 350 horsepower and a stump-pulling 650 lb-ft of torque from just 1,500 rpm. It is standard on all models except for the 3500, which gets a standard Hemi V8 with the diesel as an option.
The Hemi is a 5.7-liter unit with 380 horsepower and 404 lb-ft. of torque mated exclusively to a five-speed automatic. Rear wheel drive is standard, while four wheel drive can be specified as an option.
The Chassis Cab comes in three service levels, including the 3500, 4500 and 5500, all of which can be had in two-door Regular Cab form or as the four-door Crew Cab. Wheelbase options are wide-ranging: the 3500 Regular Cab comes in 143.5 and 167.5 inch lengths with the Crew Cab checking in at 172.4 inches; the 4500 and 5500 Regular Cabs can be had in 144.5, 168.5, 192.5 and 204.5 inch wheelbases, while the Crew Cab for both offers the option of a 173.4 or 197.4 inch wheelbase.
Maximum towing capacity for all models is 18,300 lbs, a figure achieved with rear-wheel drive, manual transmission and diesel equipped trucks; other configurations feature lesser towing capacities. Payload differs from model to model. The 3500 can carry 6,520 lbs, the 4500 will manage 8,880 lbs and the mighty 5500 is rated at 11,820 lbs.
Trim levels include basic ST, mid-grade SLT and, on Crew Cabs, the luxurious Laramie. For the 3500, ST includes little more than A/C, power windows and locks, 17-inch steel wheels and a limited slip rear differential, while stepping up to the SLT trim level brings SIRIUS satellite radio, an electronic vehicle information center (EVIC) and 17-inch chrome clad steel wheels.
Laramie models coddle with chrome folding trailer tow mirrors w/ heat, integrated turn signals & puddle lamps, an electric shift transfer case for four wheel drive, the limited-slip rear differential, quad headlamps,17-Inch Polished Forged Aluminum Wheels, heated steering wheel, leather trimmed seating with heating and available ventilation, (EVIC), Uconnect Multimedia System and SIRIUS Satellite Radio.
In the 4500 and 5500, the ST trim includes an integrated exhaust brake for towing, folding trailer tow mirrors, 19.5 inch Argent steel wheels, the limited slip rear dif and EVIC. SLT nets SIRIUS. The Laramie for both models includes full power seats with power lumbar adjustment and automatic dual-temperature controls in addition to all the features standard on the 3500 Laramie.
Major options include a navigation system with 6.5-inch touch-screen bundled with a 40GB music storage system, power adjustable pedals and a 22-gallon fuel tank.
Safety features consist of dual front and side-curtain airbags, ABS and a sturdy hydroformed ladder frame that provides extra rigidity in the event of a collision.
Key competitors
Ram's biggest competition comes from Ford's fleet offerings, in this case the Ford Super Duty F-250, Super Duty F-350 and Super Duty F-450 offerings, along with GM's Chevrolet Silverado 2500HD and Silverado 3500HD and GMC Sierra 2500HD and Sierra 3500HD.