The 3.0-liter diesel engine will soon be available when the 2020 Chevrolet Silverado goes on sale, however, so Chevy has taken it upon itself to drop some more details on the Duramax ahead of its launch.
For starters, the engine is rated at an SAE-certified 277 horsepower and 460 lb-ft of torque, delivering 90 percent of its torque at just 1,250 RPM and sustaining peak torque from 1,500 RPM to 3,000 RPM.
Much of that power comes via the variable geometry turbocharger, which has a max boost pressure of 43.5 psi and is paired with a liquid water-to-air intercooler system.
The inline-six block itself is the result of a new clean-sheet design and is “made of a cast aluminum alloy that provides the strength required to support the high combustion pressures that occur within a diesel engine, while also offering an approximately 25 per cent mass savings over a comparable cast iron engine block,” the automaker says. Iron cylinder liners are used within the aluminum block for durability, which are joined by a forged steel crankshaft, forged steel connecting rods and aluminum pistons.
Other notable features of the LM2 inline-six Duramax include a new low-pressure exhaust gas recirculation system, which allows the engine to burn spent exhaust gas that has already passed through the particulate filter, and variable intake and oil systems for optimizing engine operation at varying speeds and loads. Further efficiency gains come via GM’s 10-speed automatic transmission, standard on the 2020 Silverado with the 3.0-liter Duramax engine, and a start-stop system.
GM says the LM2 Duramax motor serves as the “no-compromise choice,” in the 2020 Silverado powertrain lineup and promises Chevy customers will find it to be “powerfully smooth and satisfying.”
Stay tuned for more details on pricing and fuel economy for the 2020 Chevrolet Silverado with the 3.0-liter Duramax engine.