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Cummins, Ram Truck & Mopar Celebrate 30 Years
2019 marked 100 years of diesel engine production for Cummins and 30 years of Cummins diesels powering Ram Trucks with Mopar® providing O.E. replacement parts.
It all started with the Cummins 5.9L Turbo Diesel in model year 1989 through the company’s latest 6.7L Turbo Diesel. Both have served Ram Truck customers in myriad industries. FCA US LLC congratulates Cummins not only on 100 years of production but also on 30 years of equipping Ram Trucks with powerful, reliable diesel engines and 30 years of Mopar® providing O.E. replacement parts.
1985 Dodge Ram (Cummins 5.9L Diesel)
Called D001, the 1985 Dodge Ram was the first Cummins-Chrysler development truck, meaning it was the first Ram truck fitted with a Cummins engine. The engine is a 12-valve Cummins 5.9L with a rating of 160 hp and 400 lb.-ft. of torque, less than half of today’s rating.
Since its early days as a test vehicle, the truck has been used as a parts runner among Columbus-area facilities and as a shop vehicle for the Cummins Technical Center. Eventually, D001 fell to disrepair, at one point going five years without being started. In 2012, a restoration team of Cummins employees started a project to fully restore the truck, and went to work installing new accessories and restoring the body and interior.
The team didn’t touch the internal parts in the engine, however. Even after all these years, the 5.9L engine is still running without problems.
The fully restored D001 was unveiled at the 2013 Turbo Diesel Rally in Columbus, Indiana. Today, the truck is on display in the Columbus Mid-Range Engine Plant in Columbus, Indiana, a testament to a partnership – and an engine – that is still running strong. (The main image is of the fully restored D001.)
Fast Forward To Today
For the first time, HD pickup buyers can get an impressive 1000 lb.-ft. of torque. This high-output (HO) rating is offered exclusively in the Ram 3500 equipped with the Aisin transmission option. The new high-output engine boasts 400 hp and 1000 lb.-ft. of best-in-class torque.
For Ram 2500 and 3500 (equipped with a 68RFE Auto) hp and torque have increased to 370 hp and 850 lb.-ft. to provide the right power for these models.
In addition to moving to a higher capability high-pressure pump, several critical features were implemented to maintain the proven reliability and durability customers have come to expect:
- A Compacted Graphite Iron (CGI) material for the block allows us to increase the cylinder pressure capability while reducing the overall weight by almost 60 lbs.
- A new cast-iron cylinder head containing high-temperature capable exhaust valves actuated by all-new hydraulic lash adjusters in the block eliminates the need for valvetrain adjustment service intervals
- The heart of the engine is a higher-strength alloy crankshaft with a 10-bolt crank flange driving newly designed forged connecting rods and new bearings which transfer power from the low-friction ring-wrapped pistons
- A new larger Cummins Holset variable-geometry turbocharger optimized with heavy-duty bearings, and a new compressor-side housing is a key ingredient in the new ratings, pumping 33 pounds per square inch (psi) of fresh air into the engine
- The new fuel-delivery system includes a new 29,000 psi (2,000 bar) fuel pump and fuel rail with Cummins Filtration “filter in filter” NanoNet® technology
2019 RAM TRUCK | Equipped With A Cummins 6.7L Turbo Diesel Engine
POWER: 370-400 hp, 276-298 kw
TORQUE: 850-1000 lb.-ft., 1152-1356 n•m
BOTTOM LINE: More horsepower and torque, improved NVH and reduced weight.