2027 Chevy Silverado 5.7L and 6.6L V8 Engines: What We Know So Far
Reviewed by the Voice Motor Sales Sales Department in Kalkaska, Michigan
One of the biggest changes coming to the next-generation 2027 Chevrolet Silverado 1500 is happening under the hood.
Chevrolet has officially confirmed two next-generation V8 engines for the redesigned Silverado: a new 5.7L V8 and a new 6.6L V8.
These engines represent a major update to the Silverado's traditional V8 lineup and continue Chevrolet's long-running commitment to naturally aspirated V8 power in its full-size pickup.
Chevrolet has not released every final specification yet, but there is already enough confirmed information to give truck shoppers a good idea of what is changing and why the new engines are worth watching.
What Engines Will the 2027 Silverado 1500 Offer?
Chevrolet has confirmed that the next-generation 2027 Silverado 1500 will continue to offer four powertrain choices.
- Enhanced 2.7L TurboMax four-cylinder
- 3.0L Duramax Turbo-Diesel
- Next-generation 5.7L V8
- Next-generation 6.6L V8
The two V8s are the biggest powertrain news for the new generation, while the TurboMax and Duramax continue to provide alternatives for shoppers with different priorities.
Chevrolet has also confirmed that the enhanced TurboMax will now be paired with a 10-speed automatic transmission.
The 5.7L V8 Returns to the Silverado
The new 5.7L V8 is particularly interesting because 5.7 liters is one of the most recognizable displacements in Chevrolet V8 history.
Longtime Chevrolet enthusiasts may immediately associate a 5.7L V8 with the famous 350-cubic-inch small-block engines that powered generations of Chevrolet cars and trucks.
The new engine, however, should not be confused with those older designs. This is a next-generation V8 developed for modern Chevrolet vehicles and the demands of today's full-size trucks.
Chevrolet says the new V8 family has been engineered to provide improvements in both power and torque while maintaining the durability and capability Silverado customers expect.
How Does the New 5.7L Compare With the Current 5.3L V8?
The current-generation Silverado has long offered Chevrolet's 5.3L V8 as one of its core gasoline engine choices.
For the next-generation truck, Chevrolet is moving to a larger 5.7L displacement for its new V8 lineup.
The additional displacement is noteworthy, but displacement alone does not tell us exactly how the new engine will perform.
Final horsepower, torque, fuel-economy, towing, and payload figures for the new engine have not yet been announced by Chevrolet.
What Chevrolet has confirmed is that the next-generation V8s will deliver improvements in power and torque.
The New 6.6L V8 Is the Big Power Story
The larger engine in the new Silverado V8 lineup will be a 6.6L naturally aspirated V8.
This represents a significant change from the 6.2L V8 offered in the current Silverado 1500.
Chevrolet has not yet released the final horsepower and torque numbers, but the company has already made an important claim about the new engine: the next-generation Silverado 1500 will offer the most powerful naturally aspirated V8 in its class, based on GM-estimated horsepower and torque ratings and current competitive information.
That makes the new 6.6L one of the most important Silverado engines to watch as Chevrolet releases additional specifications.
How Does the 6.6L Compare With the Current 6.2L?
The outgoing 6.2L V8 has been the high-output gasoline engine in the current Silverado 1500 lineup.
The next-generation Silverado moves to a larger 6.6L V8 as part of Chevrolet's new engine strategy.
Chevrolet has already confirmed improved power and torque from the next-generation V8s, but until the final numbers are released, it would be premature to make specific horsepower, torque, or towing comparisons between the new 6.6L and the outgoing 6.2L.
What is clear is that Chevrolet is not moving away from large-displacement V8 engines in its next-generation half-ton pickup. Instead, it is introducing an even larger naturally aspirated V8 at the top of the gasoline-engine lineup.
Why Is Chevrolet Introducing Larger V8 Engines?
Full-size truck buyers use their vehicles for a wide range of jobs, from everyday commuting to towing campers, hauling equipment, working on job sites, traveling off-road, and pulling trailers over long distances.
For those customers, torque, throttle response, durability, towing confidence, and predictable power delivery can be just as important as maximum horsepower.
Chevrolet says the next-generation V8s were engineered around real-world truck use, including demanding towing conditions and the everyday workloads Silverado owners place on their trucks.
The result is a new V8 lineup designed specifically around the capability expectations of a modern full-size pickup.
Are the New Silverado V8s Naturally Aspirated?
Yes. Chevrolet has identified the new Silverado V8 lineup as naturally aspirated.
That means the engines produce their power without relying on turbochargers or superchargers.
For truck buyers who prefer the characteristics of a traditional naturally aspirated V8, Chevrolet's decision to continue developing this type of engine is significant.
The new 6.6L is especially notable because Chevrolet says it will make the Silverado the most powerful naturally aspirated V8 half-ton truck in its class.
Chevrolet Is Doubling Down on V8 Power
The full-size truck market has changed substantially in recent years.
Turbocharged engines, hybrid powertrains, diesel engines, and electric trucks have all become part of the conversation.
Chevrolet will continue offering different powertrain choices, including TurboMax and Duramax, but the arrival of two entirely new V8 options makes one thing clear: the V8 remains an important part of the Silverado lineup.
That gives buyers the ability to choose the engine type that best matches how they actually use their truck.
More Than 70 Years of Chevrolet Small-Block V8 History
Chevrolet's small-block V8 history stretches back more than seven decades.
Since its introduction in the 1950s, the small-block has become one of the most recognizable engine families in the automotive world, powering everything from everyday passenger vehicles to performance cars and hard-working pickups.
Chevrolet is positioning the new 5.7L and 6.6L engines as the next chapter of that history.
While the technology and engineering have evolved dramatically, the basic idea remains familiar to Chevrolet truck owners: naturally aspirated V8 power designed for work, towing, durability, and everyday use.
Michigan Will Play a Role in the New V8 Engines
The new V8 program also has a Michigan connection.
Chevrolet has said the next-generation V8 engines will be assembled by GM teams at facilities that include Flint Engine Operations in Michigan, along with Tonawanda Propulsion and St. Catharines Propulsion.
For Chevrolet truck owners in Michigan, that adds another interesting connection between the next generation of Silverado and GM's long manufacturing history in the state.
What Has Chevrolet Said About Towing?
Chevrolet has specifically described the new V8 engines as being engineered for serious work and confident towing.
However, final towing ratings for the 2027 Silverado 1500 have not yet been released.
Maximum towing capacity depends on much more than the engine alone. Cab configuration, axle ratio, drivetrain, bed configuration, cooling equipment, suspension, packages, and other equipment can all affect a truck's final rating.
Once Chevrolet releases complete specifications, shoppers will be able to compare the 5.7L, 6.6L, TurboMax, and Duramax configurations more accurately.
Will the 5.7L or 6.6L Be Better for Towing?
It is too early to make a definitive comparison because Chevrolet has not yet published complete towing and torque figures for each engine.
The larger 6.6L will likely attract shoppers looking for maximum gasoline V8 performance, while the 5.7L may appeal to buyers who want traditional V8 characteristics without necessarily needing the highest-output engine available.
The 3.0L Duramax will also remain part of the lineup, giving frequent towing and long-distance drivers another option to compare.
Once official towing and payload ratings are available, the right engine choice will depend on what you tow, how often you tow it, and the configuration of the exact truck you are considering.
What Do We Know About Horsepower and Torque?
As of September 10, 2026, Chevrolet has not released the final horsepower and torque figures for the new 5.7L and 6.6L Silverado V8 engines.
Chevrolet has confirmed that both engines will provide improvements in power and torque compared with the current generation.
Chevrolet has also stated that the Silverado will offer the most powerful naturally aspirated V8 in its class.
Until Chevrolet publishes the actual ratings, any specific horsepower or torque numbers circulating online should be treated as estimates or speculation rather than confirmed specifications.
What About Fuel Economy?
Official EPA fuel-economy ratings for the new V8 engines have not yet been announced.
Engine displacement by itself does not determine fuel economy. Transmission programming, cylinder-management strategies, vehicle weight, gearing, aerodynamics, tires, drivetrain configuration, and other factors all affect real-world and EPA-rated efficiency.
Once official ratings become available, shoppers will be able to make a more meaningful comparison between the new 5.7L and 6.6L V8s and the other available Silverado engines.
The 2027 Silverado Is More Than an Engine Update
The new V8 engines arrive as part of a complete next-generation Silverado redesign.
Chevrolet has confirmed major changes throughout the truck, including:
- A redesigned exterior
- New LED lighting
- A more modern digital interior
- Standard 16.3-inch center display
- Standard 12.2-inch Driver Information Center
- Expanded Super Cruise availability
- Additional standard safety and driver-assistance technology
- Three lifted off-road-oriented trims
- A revised seven-trim lineup
You can read more about the complete truck in our 2027 Chevy Silverado 1500 Preview .
What Are the 2027 Silverado Trim Levels?
Chevrolet has confirmed seven core trims for the next-generation Silverado 1500:
- Work Truck
- Custom
- Custom Trail Boss
- Silverado
- Trail Boss
- High Country
- ZR2
One of the biggest naming changes is the new Silverado trim, which takes the place in the lineup previously occupied by LT.
Chevrolet has not yet published every final engine-and-trim combination, so shoppers interested in a specific 5.7L or 6.6L configuration should wait for final ordering information before assuming a particular engine will be available in every trim.
5.7L vs. 6.6L: Which Engine Should You Choose?
Until final specifications and ordering information are released, it is too early to declare one engine the better choice.
The best engine will depend on what you expect from your truck.
The 5.7L may make sense for drivers who:
- Want traditional V8 power for everyday driving
- Tow or haul but do not necessarily need maximum gasoline-engine output
- Prefer a naturally aspirated V8
- Want a balance of performance and everyday usability
The 6.6L may appeal more to drivers who:
- Want the strongest available naturally aspirated Silverado V8
- Frequently tow or haul
- Want maximum gasoline-engine performance
- Simply prefer a larger-displacement V8
Final horsepower, torque, towing, fuel economy, pricing, and trim availability will ultimately determine how the two engines compare.
What Our Sales Team Is Watching
At Voice Motor Sales, there are several details we are especially interested in seeing once Chevrolet releases the complete specifications.
- Final horsepower for the 5.7L V8
- Final horsepower for the 6.6L V8
- Peak torque and where it occurs in the RPM range
- Maximum towing capacity
- Payload ratings
- Fuel-economy ratings
- Which V8 is available with each trim
- Pricing differences between the engines
- Availability of the engines with Trail Boss and ZR2 configurations
- How the new engines feel compared with the current 5.3L and 6.2L V8s
Those details will give truck buyers a much clearer picture of where each engine fits within the next-generation Silverado lineup.
Why the New V8s Matter for Northern Michigan Truck Buyers
Silverado owners in Northern Michigan use their trucks for just about everything.
That can mean towing campers and boats, hauling equipment, maintaining property, traveling seasonal roads, commuting through winter weather, working on job sites, or heading north for hunting and recreation.
For drivers around Kalkaska, Traverse City, Grayling, Cadillac, Lake City, Mancelona, and surrounding communities, the choice between the new 5.7L, 6.6L, TurboMax, and Duramax engines may come down to the type of work the truck needs to perform.
Once complete specifications become available, comparing the engines based on real towing requirements and everyday driving needs will be more useful than simply choosing the engine with the largest number on the badge.
Should You Wait for the 2027 Silverado?
If the new 5.7L or 6.6L V8 is one of the main reasons you are considering your next truck, the next-generation 2027 Silverado is certainly worth watching.
Chevrolet says the truck is expected to become available in late 2026.
On the other hand, shoppers who need a truck now still have access to current-generation Silverado 1500 models with established engine options and known specifications.
You can browse current Chevrolet Silverado 1500 inventory at Voice Motor Sales while deciding whether the next-generation truck is worth waiting for.
Follow the Next-Generation Silverado at Voice Motor Sales
The new 5.7L and 6.6L V8 engines are shaping up to be two of the most significant changes arriving with the next-generation Chevrolet Silverado 1500.
We already know Chevrolet is increasing V8 displacement, improving power and torque, and continuing its commitment to naturally aspirated V8 engines in the full-size truck market.
The next major pieces of information will be the final horsepower, torque, towing, payload, fuel-economy, pricing, and engine-availability figures.
Voice Motor Sales will continue following the next-generation Silverado as additional information becomes available.
In the meantime, you can shop current Silverado 1500 inventory , get started with a trade appraisal , or contact Voice Motor Sales if you have questions about current or upcoming Chevrolet trucks.
More Silverado Shopping Resources
Frequently Asked Questions About the New 2027 Silverado V8 Engines
Is Chevrolet really bringing back a 5.7L V8 in the Silverado?
Yes. Chevrolet has officially confirmed a next-generation 5.7L V8 as one of the four available powertrain choices for the 2027 Silverado 1500.
Will the 2027 Silverado have a 6.6L gas V8?
Yes. Chevrolet has confirmed a new naturally aspirated 6.6L V8 for the next-generation Silverado 1500.
How much horsepower will the 2027 Silverado 5.7L V8 have?
Chevrolet has not yet announced the final horsepower rating for the 5.7L V8. Chevrolet has confirmed that the next-generation V8 engines will offer improvements in power and torque.
How much horsepower will the 2027 Silverado 6.6L V8 have?
The final horsepower figure has not yet been released. Chevrolet has said the 2027 Silverado will offer the most powerful naturally aspirated V8 in its class based on GM-estimated horsepower and torque ratings.
Does the 6.6L replace the Silverado's 6.2L V8?
The current Silverado lineup offers a 6.2L V8, while the next-generation Silverado introduces a new 6.6L V8 as its larger naturally aspirated gasoline V8 option.
Does the 5.7L replace the 5.3L Silverado V8?
The next-generation truck changes Chevrolet's V8 offerings from the current 5.3L and 6.2L choices to new 5.7L and 6.6L V8 engines.
Will the 2027 Silverado still have the 3.0L Duramax?
Yes. Chevrolet has confirmed that the 3.0L Duramax Turbo-Diesel will remain one of the four powertrain choices for the 2027 Silverado 1500.
Will the 2027 Silverado still offer the TurboMax engine?
Yes. An enhanced 2.7L TurboMax remains part of the lineup and will now be paired with a 10-speed automatic transmission.
When will the 2027 Chevrolet Silverado 1500 be available?
Chevrolet has said the next-generation 2027 Silverado 1500 is expected to become available in late 2026. Exact timing and availability can vary as production and dealer allocation information becomes available.
Where can I learn more about the 2027 Silverado near Kalkaska, Michigan?
Voice Motor Sales in Kalkaska will continue following Chevrolet's announcements regarding the 2027 Silverado 1500. Shoppers throughout Northern Michigan can contact Voice Motor Sales for information about current Silverado inventory and future availability.