New LS6 V8
Both Grand Sport versions will use Chevrolet’s next-generation LS6 6.7-liter V8. The naturally aspirated engine will produce 535 horsepower and 520 lb.-ft. of torque, with output routed through an eight-speed dual-clutch automatic transmission. Chevrolet says that the engine’s larger 409-cubic-inch displacement, 13.0:1 compression ratio, 95-mm throttle body, and tunnel-ram intake will help improve response and airflow.
Chevy engineers have also focused on long-term ownership and enhanced durability. This innovative powerplant will use a new lubrication system, forged pistons and rods, and revised exhaust manifolds for high-load, high-temperature driving.