The first mystery 427 Chevy engine during test and development at the Desert Proving Grounds in Mesa, Arizona. Although the car in the picture is a 1963 Chevy Impala SS, this picture was made in November of 1962. This car ran in excess of 180 mph during tests for the up-coming 1963 Daytona 500.

The man in the car is Rex White, the 1960 NASCAR Grand National Champion. Standing beside the car is crew chief and engine Louie Clements.