Chevrolet’s Grand Sport revival could feature an all-new engine, reshaping the C8 range with classic V8 sound and carefully targeted performance
The Corvette faithful may have something big to look forward to. The popular Chevrolet Corvette Grand Sport nameplate is expected to return for the 2027 model year, and thanks to a recent leak, new details have surfaced about what might be sitting under its hood.
Instead of reworking the Stingray’s 6.2-liter naturally aspirated V8, or dialing back the Z06’s 5.5-liter flat-plane-crank engine, GM could debut an entirely new powerplant in the Grand Sport, believed to be called the LS6 V8.
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Details about this engine have been few and far between up until this point, and it was speculated to be offered in 5.5-liter and 6.6-liter configurations. However, a leak from the GM Parts Book, used by company technicians for diagnosing and fixing vehicles, suggests the LS6 could be even more exciting than expected.
A Big Step Up for the Grand Sport
The leak, first reported by Corvette Blogger, includes a listing for the new engine that reveals it will displace 6.7 liters, or 409 cubic inches. It will feature an aluminum block along with both direct and port fuel injection. Notably, the same GM Parts Book was used back in 2023 to uncover the C8 ZR1’s upcoming 5.5-liter twin-turbocharged V8.
Earlier this month, Corvette insider and salesman Rick Conti took to YouTube to share a video that reportedly revealed the exhaust note of the new Corvette Grand Sport. Unfortunately, the video was deleted after a few days, but the clip revealed the new LS6 will be a throaty, classic V8 sound and is bound to get enthusiasts very excited.
Power and Price
It’s not yet clear how much power the new 6.7-liter engine will deliver in the Grand Sport, but there’s plenty of space between the entry-level Stingray and the hybridized E-Ray in the C8 family.
With the performance exhaust, the Stingray pumps out 495 hp, while the E-Ray delivers 655 hp, and the Z06 is rated at 670 hp. Chevy could be on to a winner if it gives the Grand Sport between 550 hp and 600 hp.
Pricing could be just as strategic. The Stingray starts at $70,000, while the E-Ray kicks off at $108,600. If Chevrolet positions the Grand Sport between $85,000 and $100,000, it could hit a sweet spot that combines performance and value in a way that appeals to a wide slice of buyers. If so, it may well become the volume leader in the C8 lineup.
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Brad Anderson’s lifelong affair and fascination with cars started young. Before even graduating high school,… Read full bio

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