New GM Truck V8s Beat Ford and Ram on Horsepower: Here's the Full Spec Download
GM says the redesigned pickups will keep V-8 power in its lineup as full-size truck profits and buyer demand for towing remain strong.
- On Thursday, General Motors unveiled the engine lineup for its 2027 Chevrolet Silverado 1500 and GMC Sierra 1500, featuring two new V-8 engines, a carryover diesel, and an enhanced four-cylinder turbocharged option.
- General Motors executives intend the upgraded engines to extend the automaker's six consecutive years of sales leadership over Ford and Stellantis in the competitive full-size pickup truck segment, where V-8 engines remain highly popular.
- The 6.6L V-8 produces 481 horsepower and 501 lb-ft of torque, while the 5.7L V-8 generates 402 horsepower and 428 lb-ft, marking significant improvements over their predecessors for towing capability.
- General Motors committed $888 million to its New York facility and $691 million Canadian to its Catharines plant, with initial production beginning at the Flint location capable of 1,800 engines daily.
- Amid ongoing National Highway Traffic Safety Administration investigations into previous engine failures, General Motors executive Norman Peralta said the company is "very confident" these redesigned engines will not have similar problems.
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11 Articles
GM's All-New L76 and L78 Small Blocks Detailed, 6.6L V8 Packs 481 HP in Half-Ton Pickup Trucks
General Motors finally put real numbers behind the small blocks that power the redesigned Silverado 1500 and Sierra 1500. The 5.7- and 6.6-liter mills held back the fine print until now, including their official regular production option codes. L76 is the designation of the lesser engine, which replaces the old 5.3-liter small block. This unit makes 402 horsepower and 428 pound-feet (580 Newton-meters) of twist. Upgrading to the L78 gives... (co…
GM Debuts New V-8 Engines for 2027 Pickups
GM unveiled the sixth generation of its small-block V-8s for the 2027 Silverado 1500 and Sierra 1500, delivering higher power, torque and efficiency with 5.7L and 6.6L engines designed for towing, off-road use, and long trips, with production ramping in Flint. The move emphasizes GM’s push to maintain leadership in the profitable full-size truck segment, alongside new inline-six diesel and turbo four-cylinder options amid ongoing demand for gas-…
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