Every 2027 Corvette Engine Explained

The Best Corvette Engine Lineup Ever?

The 2027 Corvette lineup is going to be the most potent in history. That is thanks to three powerful V8 engines. And a tiny assist from some electric motors. But forget the electrics for now and let’s focus on just the V8 power.

With the 6.2L LT2 exiting the chat, the LS6, LT6, and LT7 are now the three 2027 model-year engine choices. And every one of them is hugely impressive in their own right. The LS6 is the weakest, with only a meager 535 horsepower. Think about that. The base, cheapest, slowest, poverty-spec, whatever you want to call it, Corvette in 2027 will make 535 horsepower.

More than the Z06 from just two generations ago.

That power all comes without the aid of forced induction or any electronic assistance. Just a good old American, big-displacement small-block V8. And the performance figures just got up from here. So, let’s take a moment and bask in 2027 Corvette V8 glory by making a deeper dive into each engine that will be available.

1. All-New LS6 – Intro

We start with the newest engine in the lineup, the LS6. “With the LS6, you get that punch of high-displacement torque from low revs. So, when you’re canyon cruising, you’re driving around town, you don’t have to put the whip to the engine to motivate it through a small hole in traffic. Yet you still have that kind of top-end power that makes the track experience feel unmistakably Corvette,” said GM engineer Mike Kociba.

2027 Chevrolet Corvette Stingray & 2027 Corvette Grand Sport

• LS6 small-block V8
• Displacement: 6.7 liters
• 535 horsepower and 520 lb-ft of torque
• 2027 Chevrolet Corvette Stingray & 2027 Corvette Grand Sport

2027 Chevrolet Corvette Grand Sport X

• LS6 small-block V8 + a front eAxle
• Displacement: 6.7 liters
• 721 combined horsepower and 665 lb-ft of torque

2. All-New LS6 – Deeper Dive

As automakers continue to abandon V8 engines, Chevrolet is doing the opposite with the Corvette. Speaking about the all-new LS6 V8, Corvette engineers said the goal was to honor the heritage of large-displacement small blocks while pushing performance to new levels. With 409 cubic inches of displacement, a high 13:1 compression ratio, and a focus on delivering massive torque, the LS6 is designed to provide the sights, sounds, and sensations enthusiasts crave. Chevrolet believes the naturally aspirated V8 remains a key part of the Corvette's identity and is doubling down on a formula that few competitors still offer.

3. LT6 – Intro

The C8 Z06 was like no other Corvette before it when it arrived in 2023. A big reason for that is the LT6 engine that sits behind the driver. "It’s the most powerful naturally aspirated V8 ever offered in a production car, by a wide margin. So, it’s got that crown and I don’t think anyone’s gonna touch it. That’s its big achievement. But the LT6 was built and designed around character,” said GM engineer Dustin Gardner.

“It’s also the highest-revving small block we’ve ever done. It’s an emotional engine. That's what resonates with customers: the free-breathing, naturally aspirated, high engine speed, light, flat plane crank, supercar character.”

2027 Chevrolet Corvette Z06

• LT6 Gemini V8
• Displacement: 5.5 liters
• 670 horsepower and 460 lb-ft of torque

4. LT6 – Deeper Dive

The Corvette Z06's LT6 engine wasn't derived from an existing V8, it was engineered from a clean sheet of paper. According to Corvette engineers, the goal was to create a naturally aspirated flat-plane crank V8 capable of revving to nearly 9,000 rpm while still delivering the low-end torque buyers expect from a Corvette. The result was the 5.5-liter LT6, which strikes a balance between high-revving exotic car character and traditional American V8 performance.

Engineers describe the LT6-powered Z06 as the most track-focused Corvette in the lineup, designed to feel light, precise, and razor-sharp on a road course.

Anyone who has driven one is sure to agree.

But then the engineers dialed things up one more notch (to full-on insanity)...

5. LT7 – Intro

The incredible LT7 that powers the most powerful Corvettes in history. “If you want most of the LT6’s character, and you just want no-compromise torque and power that’s off the charts, then you go to the twin-turbo variant of the two, the LT7. It comes with mind-bending power and torque,” said Gardner. But the LT7 is more than just an LT6 with some turbos hanging off of it. The LT7 gets beefier connecting rods and larger pins, as well as a distinct head casting that allows for both port and direct fuel injection.

2027 Chevrolet Corvette ZR1

• LT7 Gemini V8
• Displacement: 5.5 liters
• 1064 horsepower and 828 lb-ft of torque

2027 Chevrolet Corvette ZR1X

• LT7 Gemini V8 + a front eAxle
• Displacement: 5.5 liters
• 1250 combined horsepower and 973 lb-ft of torque

6. LT7 – Deeper Dive

For Corvette engineers, the LT7 is about more than horsepower numbers, it's about creating an unforgettable experience. Early rumors suggested the twin-turbocharged V8 would produce around 850 horsepower, but engineers quickly realized the new Gemini architecture had far more potential.

As development progressed, the team set its sights on the once-unthinkable 1,000-horsepower mark. One engineer recalled the moment the LT7 became a legend: the first time it produced so much power, it literally broke the most powerful dyno GM owned at the time. So they had to buy a better dyno.

Combined with the unmistakable sound of a small-block V8, the LT7 delivers a driving experience few enthusiasts will ever forget.

Images: Chevrolet; Joe Kucinski