A "Small Block" refers to a type of engine design commonly used in automobiles, particularly in American muscle cars. These engines are characterized by their compact size and lightweight construction, which allows for better performance and handling. The most famous example is the Chevrolet Small Block, introduced in 1955, which has become a popular choice for various vehicles due to its versatility and power. Small Block engines typically have a V8 configuration, meaning they have eight cylinders arranged in a V shape. They are known for their ability to produce significant horsepower while maintaining good fuel efficiency. This combination of power and efficiency has made Small Block engines a favorite among car enthusiasts and racers alike.