The 1969 Chevrolet Corvette ZL1: The Highest-Revving Big Block V8 in a Production Car Ever 1969 Corvette ZL1(Via Chevrolet) Big block engines are loved by muscle car fans for their large size and power. These engines, often over 400 cubic inches (ci), are great for builds needing more than 1,000 horsepower. However, big blocks…