Introducing the New Generation V8 in the 2027 Chevrolet Corvette Grand Sport

The legend of the “small block” V8 continues well into the 21st Century. Since 1954, the iconic engine has served Chevrolet. Ever evolving with new compositions for the block, the cylinders, the heads, induction systems, exhaust designs, and even turbocharging. Many innovations were developed using a simple formula that has engaged consumers and enthusiasts alike.  

Starting with the 2027 Chevrolet Corvette Grand Sport and Grand Sport X, a new-generation V8 will arrive, further advancing the development of the “Small Block.”  

The new-generation LS6 V8 arrived with a displacement of 6.7 liters. Both the engine code and displacement have historical meaning at Chevrolet. The LS6 code was used for two iconic Corvette engines – the “Big Block” 454 cubic inch V8 from the 1970s and the C5’s Z06 5.7-liter V8. Its displacement is equal to 409 cubic inches – the same size as an iconic engine from the early 1960s that catapulted Chevrolet into the muscle car era.  

The new LS6 has been rated at 535 horsepower and 520 pound-feet of torque. Also, these numbers are achieved at higher RPMs than ever before. The 535-horsepower rating is achieved at 6,100 RPM, while the torque peak is at 4,600 RPM. These numbers represent new benchmarks for the Corvette in terms of standard specification, as well as for a naturally aspirated V8 on any Chevrolet. 

Achieving these performance benchmarks also means reorienting the engine’s compression. This was achieved by tuning the compression ratio to 13.0:1 – the highest number in any naturally aspirated Corvette engine ever. Not only does the higher compression ratio increase horsepower and torque, but it also enhances thermal efficiency inside the engine, enabling fuel to turn into mechanical energy rather than being wasted as heat.  

This is also combined with a new fuel delivery system for the LS6. One outcome of the tune and overall engine development was to achieve improved emissions and fuel efficiency from a larger-displacement V8. 

Another piece of development for the larger-displacement LS6 was increasing the piston stroke from 92 millimeters on the current LT2 6.2-liter V8 to 100 millimeters in the new engine. This was accomplished without any change to the bore. In fact, the bore has not changed since its initial debut in 1954.  

The 2027 Corvette Grand Sport and Grand Sport X will not be the recipients of this new generation V8. We should expect it to be found underneath the hood of any Chevrolet vehicle equipped with a V8. Imagine this engine powering the Silverado 1500, Tahoe, or Suburban? What do you think it would do for towing capacity? 

The 2027 Corvette Grand Sport and Grand Sport X will be available later this year at Barry’s Chevrolet. If this new engine sparks your need for performance, contact us, and we’ll get you on your way into a new generation of this iconic V8 when they arrive here.