Chevrolet has already told you what’s coming, months ahead of the truck reaching dealer lots: the redesigned 2027 Silverado 1500 gets two new naturally aspirated V8 engines, and the bigger of the two will be, in the company’s own words, “the most powerful naturally-aspirated V8 engine in its class.”

Chevrolet formally introduced the next-generation Silverado 1500 in a June 16 press release, confirming the drivetrain lineup, trim structure, and technology package for America’s best-selling vehicle. GMC put out a parallel announcement the same week for the mechanically related Sierra 1500. Both trucks keep the specific horsepower and torque numbers under wraps for now — Chevy says full specs and pricing are coming later this year, closer to the on-sale date — but the engine architecture, tech, and trim lineup are locked in.

Key Points

• Two new naturally aspirated V8s: a 5.7-liter and a 6.6-liter, both sixth-generation Small Block designs
• Chevy says the 6.6L will be the most powerful naturally aspirated V8 in its segment — horsepower figures still unannounced
• Four total powertrains, including an enhanced 2.7L TurboMax and a segment-exclusive 3.0L Duramax turbo-diesel
• More than 60 inches of combined digital display space available across the lineup

The engine news matters because it runs against the industry’s broader drift toward turbocharging and electrification for full-size trucks. GM is doubling down on big, naturally aspirated displacement instead — the kind of engine that doesn’t need boost to make peak torque and, according to Edmunds’ reporting on the truck, is expected to keep the base price around or just under $40,000, with fully loaded trims pushing past $80,000.

What’s New

• New sheetmetal on a revised version of GM’s T1 truck platform
• Seven trims: Work Truck, Custom, Custom Trail Boss, Silverado (a new base trim replacing LT), Trail Boss, ZR2, and High Country
• ZR2 gets 35-inch off-road tires, a 2-inch lift, front and rear electronic locking differentials, and Multimatic DSSV dampers
• An available ZR2 Bison Edition built in collaboration with American Expedition Vehicles, adding heavier bumpers and skid-plate protection
• Standard new safety tech across the range, including intersection automatic emergency braking and front pedestrian/bicyclist braking
• Super Cruise driver-assistance with trailering capability, expanded to over 600,000 miles of compatible roads

Chief engineer Mark Dickens put the durability testing behind the new V8s plainly in Chevrolet’s release: “We pushed these engines through an extensive testing and validation process to make sure they deliver the durability, capability and dependability Silverado customers expect.” Design director Phil Zak framed the styling goal the same way — “to create a truck that looks stronger, more modern” — while global Chevrolet VP Scott Bell tied the whole redesign back to the brand’s history, saying the Silverado “has earned truck customers’ trust over decades of hard work in the real world.”

The truck is expected to reach dealers before the end of the year, with GM planning to release detailed specs and pricing closer to that on-sale window. For a segment where the loudest recent headlines have been about screens, software, and electrification, GM is betting a meaningful chunk of its next truck generation on a bigger V8 — a wager that says as much about what truck buyers are telling GM as it does about the engine itself.