2,5L Formula :
- Coventry inline 4
- Ferrari inline 4
- Ferrari V6
- BRM V8
- Coventry Climax V8
- Coventry Climax Flat-16 (never raced)
- Ferrari V6
- Ferrari V8
- Ferrari Flat-12
- Honda V12
- Porsche Flat-4
- Porsche Flat-8
- Alfa-Romeo V8
- Alfa-Romeo Flat-12
- Alfa-Romeo V12
- BRM H16
- BRM V12
- Ferrari V12
- Ferrari Flat-12
- Ford-Cosworth DFV
- Ford-Cosworth DFY
- Maserati V12
- Matra V12
- Repco V8
- Renault-Gordini V8 (never raced)
- Weslake V12
- Tecno Flat-12