
GM's 8.3L Duramax Diesel Delivers 1,230 lb-ft of Torque for 2027 HD Trucks
General Motors has confirmed the specifications for its new 8.3-liter Duramax turbo-diesel V8, which will power the 2027 Chevrolet Silverado HD and GMC Sierra HD. The engine produces 1,230 lb-ft of torque, directly challenging Ford's 6.7-liter Power Stroke. This addition completes a four-engine lineup for GM's 2027 pickups, which also includes two new naturally aspirated V8s and an upgraded turbocharged four-cylinder.




