By Patrick Rall
It is hard to talk about the Ram heavy duty truck lineup and yesterday, the Chrysler Group announced a massive milestone for the tried and true diesel engine as the folks at Cummins built the 2,000,000thCummins Turbo Diesel engine for the Ram HD. Cummins first began building “light duty” diesel engines for the then-Dodge Ram in 1988 after launching their partnership in 1985 when the two companies collaborated on a “new” 5.9 liter inline-6 cylinder, 12 valve engine that would eventually become the production motor for the 1988 Dodge Ram 2500.
“The Ram Truck-Cummins diesel partnership is one of the industry’s most enduring and certainly fitting of
such a tribute,” says Fred Diaz, President and CEO – Ram Truck Brand and Chrysler de Mexico. “Both companies have benefited greatly, but Ram diesel customers are the real beneficiaries. Every day they experience the toughness and capability a Cummins-powered Ram can deliver.” When the Cummins Turbo Diesel engine first arrived in the Ram 2500, it offered 160 horsepower and 400lb-ft of torque. This made the heavy duty Ram one of the most powerful trucks on the US market but by today’s standards – that original “CTD” pales in comparison to the modern 6.7L Cummins engine in the 2013 Ram HD. The current CTD produces 350 horsepower and 800lb-ft of torque but for the 2013 model year, the Ram HD Cummins High Output engine will pack a whopping 385 horsepower and 850lb-ft of torque – making it the most powerful truck on the consumer market. These numbers are why the Cummins Turbo Diesel engine is ordered in some 80% of the Ram HD trucks ordered today.
The Cummins Turbo Diesel engine began its life in the Ram HD as a 13 valve inline-6 measuring 5.9 liters but it has obviously grown a great deal over the past four decades. In 1998, the 24 valve design came to the Cummins engine and in 2003, a common rail fuel delivery system was added – two features which helped the CTD hit Ward’s
10 Best Engines list in 2004. From there, the next big change came in 2007 when the Ram HD engine grew from 5.9 to 6.7 liters and since then; Chrysler and Cummins have been tweaking this powerful oil burner to reach the current figured.
The milestone 2,000,000th Cummins Turbo Diesel engine built this week at the Columbus Indiana plant will not be installed in a new Ram truck – instead serving as a display unit as it tours the various auto shows and other events around the US.
Click here to visit the DodgeForum.com Cummins Turbo Diesel section!