by The Return of an Iconic Name
Chevrolet Corvette fans seem to be in for a major event. The popular Corvette Grand Sport variant is predicted to return for the 2027 model year. A recent information leak sheds light on what might be hiding under the hood of this new model.
New Engine – New Possibilities
Instead of modifying the naturally aspirated 6.2-liter V8 from the Stingray or detuning the 5.5-liter flat-plane crank engine from the Z06, General Motors is likely to introduce a completely new powertrain for the Grand Sport. Its anticipated name is the LS6 V8.
Details about this engine have been extremely scarce, with speculation about 5.5-liter and 6.6-liter versions. However, a leak from a GM parts catalog used by the company’s technicians suggests the LS6 could turn out to be even more interesting.
Technical Features and Confirmation
The leak, first reported by Corvette Blogger, contains an entry for a new engine. It reveals that the displacement will be 6.7 liters (409 cubic inches). The engine will feature an aluminum block and a combined fuel injection system (direct and port).
This same GM catalog was used back in 2023 to disclose information about the future 5.5-liter twin-turbo V8 for the C8 ZR1.
Earlier this month, well-known insider Rick Conti published a YouTube video with the alleged exhaust sound of the new Corvette Grand Sport. Although the video was quickly removed, a snippet allowed listeners to hear a low, classic V8 rumble that undoubtedly excites enthusiasts.
Power and Pricing Strategy
The exact power output of the new 6.7-liter engine for the Grand Sport is still unknown, but there is quite a gap in the C8 family between the base Stingray and the hybrid E-Ray.
With the sport exhaust, the Stingray produces 495 hp, the E-Ray makes 655 hp, and the Z06 is rated at 670 hp. Chevrolet could hit the sweet spot by equipping the Grand Sport with an engine producing between 550 and 600 hp.
The pricing policy could be no less strategic. The Stingray starts at $70,000, and the E-Ray at $108,600. If Chevrolet positions the Grand Sport in the range of $85,000 to $100,000, it could strike the perfect balance of performance and cost, attractive to a wide range of buyers. In that case, this model could well become the highest-volume one in the C8 lineup.
The return of the Grand Sport with a completely new engine could significantly enliven the mid-range sports car market. This is not just about filling a niche between existing models, but about introducing a new technical foundation that could define future Chevrolet developments. The success of this model will depend not only on technical specifications but also on how successfully it manages to recreate that same “soul” and handling for which this Corvette version was so revered in the past.
