General Motors is updating its engine lineup for the upcoming Chevy Silverado 1500 and GMC Sierra 1500 models. The new sixth-generation small-block V8 family includes the L76 and L78 engines, which replace previous 5.3-liter and 6.2-liter units respectively.
The 5.7-liter L76 engine delivers 402 hp and 428 lb-ft of torque, an increase from the 355 hp and 383 lb-ft produced by the outgoing 5.3-liter EcoTec3. The 6.6-liter L78 engine provides 481 hp and 501 lb-ft of torque, replacing the 420 hp and 460 lb-ft of the previous 6.2-liter version.
The entry-level 2.7-liter TurboMax four-cylinder engine receives a power boost of 40 hp and 25 lb-ft, reaching 350 hp and 455 lb-ft. Meanwhile, the 3.0-liter Duramax Turbo-Diesel maintains its output of 305 hp and 495 lb-ft, though GM has updated components including pistons, turbo vanes, and injectors.
The Silverado equipped with the new L76 V8 features a maximum towing capacity of 13,700 lbs. Payload and towing specifications vary depending on the specific vehicle configuration, trim level, and installed packages.
