Quote Originally Posted by Stan Reid View Post
The first Formula 1 car with fewer than 4 cylinders was Harry Schell's V2 JAP engined Cooper that he ran in the 1950 Monaco Grand Prix.
In addition to being the first instance of an American running in a World Championshhip event, I believe it was the first and last time that a push rod engine ran in a regular Formula 1 World Championship Grand Prix.