In the 1970 South African Grand Prix qualifying classification, ninth position's Jo Siffert from March Engineering Team had a time of 1:21:6.
The 1970 South African Grand Prix, formally titled the Fourth AA Grand Prix of South Africa (Afrikaans: Vierde AA Suid-Afrikaanse Grand Prix), was a Formula One motor race held at Kyalami Circuit on 7 March 1970. Pos Jo Siffert March Engineering 1:20.2 
