A new heavy-duty diesel engine from GM is set to power next-generation Chevrolet Silverado and GMC Sierra HD pickups, combining brute force with refined performance. The Duramax 8.3-liter V-8 delivers an impressive 555 horsepower and 1,230 pound-feet of torque, catering to those who demand maximum capability from their trucks. This engine marks a significant upgrade for the lineup, arriving just in time for the 2027 model year. Truck enthusiasts and heavy-duty drivers will want to see how this powerhouse performs in real-world conditions.
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.
