We’ve known for a while now that General Motors is rolling out a pair of new small-block V8s with the 2027 Chevrolet Silverado and GMC Sierra. However, the manufacturer has been tight-lipped on power specs—until now. The results are respectable, as the sixth-gen small-block V8 makes up to 481 horsepower and 501 lb-ft of torque in 6.6-liter form with no power-adders. In case you were wondering, that makes it the most powerful V8 in its class, and not by a little. Output is solid across the GM half-ton truck lineup. The upgraded 2.7-liter TurboMax four-cylinder base engine now makes 350 hp and 455 lb-ft of torque—up 40 hp and 25…
New GM Truck V8s Beat Ford and Ram on Horsepower: Here’s the Full Spec Download
