Pre-race sessions:
2 practice sessions held for a total of 600 minutes on 6-8/11
| Winners: |
| Overall: | 1 | Mirage M1 Ford | Hobbs / Ickx |
| Class J - Group 6/7 - Sports 3000: | 10 | Porsche 907 2.2 | Dechent / Herrmann |
| Class H - Group 6/7 - Sports 2000: | 12 | Ferrari Dino 206 S | Dean / van Rooyen |
| Class G - Group 6/7 - Sports 1600: | 17 | Peco Lolette Spyder | Rundel / Taylor |
| Class F - Group 3/4 - GT +2000: | 6 | Lola T70 Mk.3 GT Chevrolet | De Udy / Gardner |
| Class E - Group 3/4 - GT 2000: | 19 | Chevron B8 BMW | Redman / Schenken |
| Class D - Group 3/4 - GT 1600: | 26 | Lotus Elan | Holme / Rowe |
| Class C - Group 2 - Touring +1600: | 35 | Volvo 122 S | Chatz / Schultze |
| Class B - Group 2 - Touring 1600: | 30 | Toyota GT5 Coupe | Hettema / Bosman |
| Class A - Group 2 - Touring 1300: | 31 | Renault 8 Gordini | Porter / Swanepoel |
| Pole Positions: |
| Overall: | 4 | Ferrari 330 P4 | Hawkins / Love | 1:26.3000 | |
| Class J - Group 6/7 - Sports 3000: | 10 | Porsche 907 2.2 | Dechent / Herrmann | 1:31.8000 | |
| Class H - Group 6/7 - Sports 2000: | 12 | Ferrari Dino 206 S | Dean / van Rooyen | 1:31.5000 | |
| Class G - Group 6/7 - Sports 1600: | 18 | GSM Dart | Truter / Berrington-Smith | 1:43.5000 | |
| Class F - Group 3/4 - GT +2000: | 6 | Lola T70 Mk.3 GT Chevrolet | De Udy / Gardner | 1:29.1000 | |
| Class E - Group 3/4 - GT 2000: | 14 | Porsche 906 | Gethin / Gough | 1:30.0000 | |
| Class D - Group 3/4 - GT 1600: | 22 | Lotus 47 | Walker / Clarke | 1:42.6000 | |
| Class C - Group 2 - Touring +1600: | 35 | Volvo 122 S | Chatz / Schultze | 1:52.9000 | |
| Class B - Group 2 - Touring 1600: | 30 | Toyota GT5 Coupe | Hettema / Bosman | 1:53.4000 | |
| Class A - Group 2 - Touring 1300: | 31 | Renault 8 Gordini | Porter / Swanepoel | 1:50.1000 | |
| Notes of interest: |
| Top makes by numbers: | Alfa Romeo (5), Porsche (4), Ferrari (3), Lola (3), Chevron (2), Lotus (2), Renault (2), Volvo (2), Elfin (2) |
| Top engines by numbers: | Ford (6), Alfa Romeo (5), Porsche (4), Ferrari (3), BMW (2), Chevrolet (2), Renault (2), Volvo (2), BMC (2) |
| Top car types by numbers: | Lola T70 (3), Chevron B8 (2), Renault 8 (2), Volvo 122 (2), Porsche 906 (2), Alfa Romeo T33/2 (2) |
| Driver nationalities: | ZA (40), GB (15), AUS (4), B (3), D (3) |
| Most used colours: | white (38%), red (24%), green (9%), blue (7%), orange (6%), grey (5%) |
| Engine positions: | mid-engined (62%), front-engined (29%), rear-engined (9%) |
| Average engine size: | 2408 cc |
| Oldest known drivers: | Jack Holme (57), Doug Serrurier (48), John Love (44) |
| Youngest known drivers: | Guy Tunmer (20), Jacky Ickx (23), Tim Schenken (25) |