GM aims new heavy-duty diesel V-8 called Mongoose at Ford’s Scorpion

A powerful new diesel engine from GM is set to make its debut, offering significant performance upgrades for heavy-duty trucks. The Duramax 8.3-liter V-8 engine delivers an impressive combination of horsepower and torque, targeting truck enthusiasts and professionals alike. This engine will be featured in upcoming models of Chevrolet Silverado and GMC Sierra HD pickups, marking a notable advancement in their lineup. The introduction signals a return to diesel options in GM’s truck fleet after a period without them.

GM's new heavy-duty diesel engine delivers 555 hp and 1,230 pound-feet of torque. The Duramax 8.3-liter V-8 will debut on 2027 Chevrolet Silverado and GMC Sierra HD pickups this year.