Several names can inspire immense respect in the world of diesel engines as much as the Cummins engine Similar to numerous prominent car manufacturers nowadays, this company has an extensive history dating back to 1919. This long-standing presence has enabled them to perfect their expertise, which is evident from their remarkable lineup of diesel engines. Even today, Several vehicles are powered by Cummins engines. Throughout the U.S., various truck models from manufacturers including Kenworth, Peterbilt, and Volvo alongside medium-duty trucks like Freightliner and International can be seen. Nevertheless, when talking about a company that has long relied on Cummins engines for its fleet, Ram inevitably comes up. Known widely for its wide range of trucks and vans, Ram stands out as an example of consistent use of these powerful engine systems over many years.
In 1989, Ram began incorporating Cummins engines, starting with a modest one. 5.9-liter, turbodiesel, inline-six motor Rated at 160 horsepower and 400 pound-feet of torque, this specific engine stayed in production up until 2007, highlighting its remarkable performance. This achievement led to increased collaboration between Ram and Cummins Inc., resulting in numerous Rams being equipped with various engines from Cummins, such as their 6.7-liter turbo-diesel unit. Recently, Cummins unveiled a newer version of this engine. Additionally, they disclosed that starting in 2025, the Ram 3500, 4500, and 5500 Chassis Cabs along with the Ram 2500 and 3500 Heavy Duty Pickup trucks can be fitted with this powerplant as an optional feature. Now let’s take a closer look at the historical partnership between the engine manufacturer and Ram, as well as determine the output level of the newly introduced engine.
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Forging A 35-Year-Plus Relationship
Stellantis, formerly known as Chrysler, has consistently encountered strong rivalry from Ford and General Motors (GM). These three companies form what is referred to as the Big Three due to their long-standing presence, vast collections of noteworthy vehicles and components, and significant impact on the auto sector. Consequently, the competitiveness amongst them remains intense and substantial. This became clear when Dodge, part of Chrysler at the time, introduced Ram in 1981; they required distinctive offerings to differentiate themselves amidst the lineup provided by Ford and GM. After eight years since Ram’s inception, the first model equipped with a Cummins engine hit the production lines, setting itself apart effectively.
The collaboration proved to be an ideal pairing, resulting in formidable medium-duty trucks: the Dodge Ram 250 and 350. Prior to using the Cummins engine, Dodge mainly utilized Mitsubishi-built engines. For instance, the 6DR5 diesel engine was considered for use in various models like the Dodge D150 and D200 trucks. Nonetheless, these engines appeared not to meet the specific goals set forth by the manufacturer for the Ram series.
The Cummins Engine Offers Enhanced Power
The year 2025 holds exciting prospects for enthusiasts of Ram and Cummins Inc. Specifically, Cummins has announced enhancements to their updated 6.7-liter engine model, boasting increased power and fuel efficiency—great news indeed. This lineup offers choices like a robust 360-horsepower engine delivering up to 800 pound-feet of torque designed specifically for Ram’s Chassis Cabs. Additionally, they're introducing a high-output variant that can crank out an impressive 430 horsepower along with a massive 1,075 pound-feet of torque for standard pickup models from the brand. Adding another layer of excitement, Cummins will be coupling these engines with an advanced 8-speed gearbox, promising top-tier driving experiences.
Considering how rapidly Cummins engines have advanced over the years, it’s not surprising that their 2025 model of the 6.7-liter engine includes these enhancements. To illustrate, the earlier 5.9-liter variant surpassed the 500 pound-feet torque threshold back in 2001. By 2019, the newer 6.7-liter iteration had achieved double that amount. Currently, the firm plans to supply the Ram line with updated versions for another half-decade. The future may reveal just how far this engine technology could progress within that timeframe.
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