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Story summary
- General Motors unveiled a 6.6-liter L78 V-8 for the 2027 Chevrolet Silverado and GMC Sierra.
- The L78 delivers 481 hp, 501 lb-ft torque, a 12.5:1 compression ratio, and a 95 mm throttle body.
- GM offers a 10-year, 150,000-mile warranty on trucks with the new V-8 amid an NHTSA probe.
- CEO Mary Barra called electric vehicles GM’s North Star despite $11 billion EV write-downs.
