The Z51's specs 

Z51 has is gas car with 400 horsepower that accelerate the car up to 185 miles per an hour. The Z51 package improves the handling of the Corvette and includes suspension upgrades, bigger brakes, and stickier tires. The Corvette C8's Z51 Performance package has been designed specifically to enable the new mid-engine sports car to run continuous racetrack laps without overheating or losing braking efficiency while going faster and handling better than the base C8.