A Small Block V8 is a type of engine configuration that features eight cylinders arranged in a V shape, with a smaller displacement compared to larger V8 engines. This design allows for a compact size while still delivering significant power and torque, making it popular in various vehicles, especially in performance cars and trucks. The most famous example of a Small Block V8 is the Chevrolet Small Block, which has been in production since 1955. These engines are known for their versatility, ease of modification, and strong aftermarket support, contributing to their enduring popularity among car enthusiasts.