2027 Corvette Grand Sport: LS6 and Z52 Checks Before Ordering Parts

Chevrolet’s March 26, 2026 announcement of the 2027 Corvette Grand Sport and Grand Sport X gives performance-parts shoppers an early lesson: “Grand Sport” alone is not enough to identify the right component. The naturally aspirated LS6, rear- versus all-wheel drive, and package-specific brakes and tires create materially different build paths. This is a planning guide, not a claim that any current aftermarket part fits a 2027 car.

A new LS6 changes the starting point

Chevrolet says the next-generation 6.7-liter LS6 V8 is rated at 535 horsepower and 520 lb-ft of torque in the 2027 Grand Sport. It also becomes the standard engine for the 2027 Stingray. The announced engine has a 13.0:1 compression ratio, both direct and port fuel injection, a 95-mm throttle body, and a revised lubrication system. Those factory details are useful context, but they do not establish interchangeability with earlier LT2 or LS-family parts. Before buying intake, exhaust, calibration, or engine-service components, check the exact model year, engine, manufacturer part number, emissions status, and installation instructions.

Grand Sport and Grand Sport X are different applications

The rear-wheel-drive Grand Sport uses the LS6 with a conventional rear-drive layout. Grand Sport X adds a front electric drive unit for all-wheel drive, with Chevrolet quoting 721 combined horsepower. That extra axle and high-voltage hardware can change packaging, service access, and what an installer must verify. A listing that simply says “2027 Grand Sport” should not be assumed to cover Grand Sport X.

Package codes matter for wheels, tires, and brakes

Chevrolet describes a standard Touring setup, a Z52 Sport Performance Package, and a Z52 Track Performance Package for Grand Sport. The Sport package uses high-performance iron brakes and Michelin Pilot Sport 4S summer tires; the Track package pairs carbon-ceramic brakes with Michelin Pilot Sport Cup 2R summer-only tires and additional track-focused hardware. The announced Grand Sport wheel sizes are 20 x 10 inches front and 21 x 13 inches rear, but wheel diameter alone cannot confirm brake clearance, offset, load rating, tire suitability, or electronic-system compatibility. Chevrolet specifically advises using GM-approved tire and wheel combinations. Record the vehicle’s package code and existing brake equipment before planning a wheel or brake change.

What to document before ordering

• VIN, model year, and whether the car is Grand Sport or Grand Sport X.
• Factory package code and installed brake, wheel, tire, exhaust, and suspension configuration.
• Exact manufacturer part number and written 2027 application evidence—not a visual resemblance to an earlier C8.
• Installer requirements, calibration and emissions rules, and any warranty or track-use limitations.

The opportunity for an enthusiast build is real, but application evidence must catch up with the new platform. SMG Speed Shop can help compare a supplier’s exact part listing against your configuration and build goals before you order; we will not represent an unverified part as a confirmed fit.

Hero artwork is a conceptual illustration, not an actual Chevrolet vehicle, engine, wheel, brake, or product photograph.

Source: Chevrolet, 2027 Corvette Grand Sport and Grand Sport X announcement (March 26, 2026).