While all but the two Porsche entries had Climax engines, only Jack Brabham of the factory Cooper team, and Stirling Moss, in Rob Walker's privately entered Lotus, had the newest developmental V8 version available to them.
Aínda que todos menos os dous Porsche tiñan motores Coventry Climax, só Jack Brabham do equipo de fábrica Cooper, e Stirling Moss, do equipo privado Rob Walker, tiveron a última versión do V8 dispoñible para eles.