Pre-race sessions:
1 practice session held for a total of 330 minutes on 5/11
| Winners: |
| Overall: | 4 | Ferrari 512 M | Giunti / Ickx |
| Category III/Class J - Group 6/7 - +3000 cc: | 7 | Lola T70 Mk.3B GT Chevrolet | Smith / Pretorius |
| Category III/Class H - Group 6/7 - 3000 cc: | 5 | Porsche 908/02 Flunder | Marko / Lins |
| Category III/Class G - Group 6/7 - 2000 cc: | 11 | Chevron B16 Spyder Ford | Redman / Hine |
| Category II/Class D - Group 4/5 - 2000 cc: | 18 | Chevron B8 BMW | Holme / van der Merwe |
| Category I/Class C - Group 1/2/3 - +2000 cc: | 21 | Ford Mustang Boss 302 | Gardner / De Udy |
| Category I/Class B - Group 1/2/3 - 2000 cc: | 24 | Mazda M10A | Schultze / Scheckter |
| Category I/Class A - Group 1/2/3 - 1300 cc: | 31 | Renault 8 Gordini | Clegg / Cloete |
| Pole Positions: |
| Overall: | 4 | Ferrari 512 M | Giunti / Ickx | 1:22.400 | |
| Category III/Class J - Group 6/7 - +3000 cc: | 7 | Lola T70 Mk.3B GT Chevrolet | Smith / Pretorius | 1:30.400 | |
| Category III/Class H - Group 6/7 - 3000 cc: | 6 | Porsche 908/02 | Larrousse / van Lennep | 1:25.900 | |
| Category III/Class G - Group 6/7 - 2000 cc: | 11 | Chevron B16 Spyder Ford | Redman / Hine | 1:25.700 | |
| Category II/Class D - Group 4/5 - 2000 cc: | 16 | Chevron B16 Ford | Joubert / Gough | 1:34.000 | |
| Category I/Class C - Group 1/2/3 - +2000 cc: | 21 | Ford Mustang Boss 302 | Gardner / De Udy | 1:42.000 | |
| Category I/Class B - Group 1/2/3 - 2000 cc: | 26 | Alfa Romeo GTAm | van Rooyen / Galli | 1:40.200 | |
| Category I/Class A - Group 1/2/3 - 1300 cc: | 30 | Renault 8 Gordini | Porter / Mortimer | 1:44.100 | |
| Notes of interest: |
| Top makes by numbers: | Alfa Romeo (6), Porsche (5), Chevron (4), Lola (4), BMW (3), Renault (3) |
| Top engines by numbers: | Ford (8), Alfa Romeo (6), Porsche (5), BMW (5), Renault (4) |
| Top car types by numbers: | Lola T210 (3), Renault 8 (3), Porsche 917 (2), Porsche 908/02 (2), Chevron B8 (2), Mazda M10A (2), Alfa Romeo 2000 GTAm (2), BMW 2002 (2), Mini Cooper (2), Datsun Sports (2) |
| Driver nationalities: | ZA (54), GB (10), D (4), I (2), A (2), B (2), RSR (2) |
| Team nationalities: | ZA (26), GB (5), D (4) |
| Most used colours: | red (35%), white (17%), blue (11%), yellow (10%), green (5%), orange (4%) |
| Engine positions: | mid-engined (47%), front-engined (44%), rear-engined (9%) |
| Average engine size: | 2221 cc (with regard to 5% cars with rotary engine an applicable size is 2332 cc) |
| Oldest known drivers: | Jack Holme (59), John Love (46), Frank Gardner (40) |
| Youngest known drivers: | Jody Scheckter (20), Guy Tunmer (22), Jacky Ickx (25) |