Leaks from General Motors’ annual dealer conference in Las Vegas point to a significantly reshaped 2027 Corvette lineup, headlined by a new 6.7-liter cross-plane V-8 and not one but two Grand Sport models.
An Instagram post from the account ZR1_M7, backed by insider chatter on enthusiast forums, claims Chevrolet will introduce both a Grand Sport and a hybrid Grand Sport X for the 2027 model year. The information reportedly came from a GM presentation to employees, dealers, and suppliers — the kind of closed-door preview that always leaks anyway.
The centerpiece is the LS6, a new-generation pushrod V-8 displacing 6.7 liters, up from the current LT2’s 6.2. Output is expected somewhere between 530 and 550 horsepower, a meaningful jump over the LT2’s 495-hp ceiling. That engine would become standard in both the Stingray and Grand Sport, finally giving the base Corvette the kind of punch its mid-engine chassis has always deserved.
The Grand Sport itself follows the traditional playbook: Stingray engine, Z06 chassis hardware. Think stiffer suspension, lighter wheels, stickier rubber, improved aero, and better cooling. It’s the recipe Chevrolet has used for decades, and it works because it addresses the one complaint most Stingray owners have — the car could handle more.
The wilder card is the Grand Sport X. According to the leaks, it pairs the LS6 with a front-axle electric motor, creating an all-wheel-drive hybrid rated at 720 horsepower. That setup mirrors the architecture of the outgoing E-Ray, but the branding shift is deliberate. Chevrolet is burying the E-Ray name after three model years and folding the concept into the Grand Sport family, tying it to the “X” nomenclature already established by the ZR1X.
The math on that 720-hp figure is revealing. If the Grand Sport X uses the same 186-hp electric motor found in the ZR1X, the LS6 contributes 534 horsepower. If it retains the E-Ray’s 160-hp unit, the V-8 would need to deliver 560 hp. Either scenario represents a serious upgrade over the current Stingray powertrain and slots the Grand Sport X into genuinely exotic territory for a car that will likely sticker well under six figures.
Enthusiast forums are already buzzing about the downstream effects. Current E-Ray owners are wondering what happens to their resale values. Z06 shoppers are doing the math on whether a Grand Sport X — with 720 hp and all-wheel-drive grip — makes the flat-plane Z06 a harder sell outside the track-day crowd.
Dealers are quietly building Grand Sport waiting lists before Chevrolet has confirmed a single detail. The timing matters. The C8 generation enters its seventh production year in 2027, and while the ZR1 and ZR1X have kept the halo burning bright, those are low-volume, high-dollar machines.
The Grand Sport and Grand Sport X represent volume — the models that actually fill dealer lots and keep the Bowling Green assembly line humming.
Dropping the E-Ray name is a smart concession to the market. The hybrid Corvette was always a better car than its branding suggested. Wrapping electric-assisted all-wheel drive in the Grand Sport heritage strips away the culture-war baggage that “E” anything carries in the Corvette community and replaces it with a nameplate that signals performance credibility.
None of this is officially confirmed. GM hasn’t commented, and dealer meeting leaks have a spotty track record on specifics. But the broad strokes — bigger V-8, Grand Sport, hybrid Grand Sport X — have been circulating from multiple independent sources for months. The dealer conference appears to have added resolution to a picture that was already coming into focus.
Seven years into the mid-engine experiment, Chevrolet is finally filling in the lineup the C8’s architecture always promised. The flagships came first. Now the cars people actually buy are getting their turn.
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