Specifications for a Dodge Ram With a Cummins Turbo Diesel Engine

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The Cummins 6.7-liter turbodiesel engine powers the 2010 Dodge Ram 2500 and larger pickup trucks. The engine is manufactured by Cummins Inc., an Indiana-based diesel engine builder. The Cummins 6.7 turbodiesel consistently outperforms its competitors in towing and payload capabilities. The Dodge Ram Cummins is also used in school buses and European intercity buses.

Background

  • The 6.7 Cummins turbodiesel in-line six-cylinder was introduced in Dodge Rams in 2007 to replace the previous generation 5.9-liter Cummins engine. About 40 percent of the 5.9’s parts were carried over to the 6.7. Cummins designed the 6.7 to the specifications of heavy-duty trucks the size of tractor-trailer big rigs. Dodge responded likewise by producing its Dodge Rams with stiffer suspension and a powertrain that can handle the stress and rigors of an engine wielding massive torque. The result was a diesel-powered pickup truck that didn’t need an engine overhaul for 300,000 miles and was equipped to handle the punishment typically encountered in larger diesel rigs. The 6.7 is perhaps the only pickup truck diesel engine that combines superior acceleration, towing, road handling and durability, according to Allpar.com.

Features

  • The 2010 Dodge Ram’s Cummins diesel features an integrated exhaust brake, originally equipped only in 18-wheelers, to improve control and stability when towing heavy loads downhill. The exhaust brake converts horsepower to braking power that extends the life of the vehicle’s brakes. An improved fuel injection system reduces engine vibration, noise and increases fuel economy. The engine was designed to run on biofuel as well.

The Details

  • Unlike the Ford and General Motors' diesel V-8s, the 6.7-liter (409 cubic inches) Cummins is an in-line six-cylinder engine. Its configuration reduces the number of moving parts to keep maintenance costs low and give the engine long life. The compression ratio is 17.3:1 with a 4.21-inch bore and 4.88-inch stroke. An electronically-controlled Bosch high-pressure, direct fuel injection system feeds fuel to the engine. The Cummins generates 350 horsepower. Equipped with an automatic transmission, the diesel-powered Dodge Ram wields 650 ft.-lbs. of torque. The manual transmission version generates 610 ft.-lbs. The engine weighs 1,050 lbs.

Integrated Power

  • The Cummins diesel is matched with an automatic transmission designed especially for the Dodge Ram 2500 and 3500 series trucks. The automatic features the Electronic Range Select, which permits the driver to manually limit the highest available gear. By limiting the gear, the driver can manually downshift while traveling downhill or upshift on steep grades to control engine and road speeds. A tow/haul mode automatically provides additional power from the engine while reducing transmission shifting.

Capacity

  • The 2010 Dodge Ram 2500 pickup equipped with the Cummins diesel and automatic transmission has a towing capacity of 13,450 lbs. and a 2,590-lb. payload capacity. The larger 3500 can tow 17,000 lbs. with a payload maximum of 5,130 lbs.

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