Here's the 12 largest of all time. Chevrolet's Mark II 427 'Mystery Motor' Was A NASCAR Engine Commonly referred to as the Mystery Motor, Chevolet's Mark II 427 was mostly based on the well-known ...

By 1961, the Chevy engineering team in charge ... a race that was part of the American Challenge Cup. Photo: NASCAR Archives Then, the experimental 427 returned to Florida for the 1963 Daytona ...

While some enthusiasts argue that the Pontiac GTO was the first muscle car, and others say that the true first was older ...