| 1st | 1 | John Love / Brian Redman | Lola T70 Mk.3B GT Chevrolet | Sydney Taylor/Team Gunston | 1:23.6000 |
| 2nd | 9 | David Piper / Richard Attwood | Porsche 917 | Perfect Circle Team David Piper | 1:24.5000 |
| 3rd | 7 | Mike De Udy / Frank Gardner | Lola T70 Mk.3B GT Chevrolet | Grand Bahama Racing Car Co. | 1:24.8000 |
| 4th | 2 | Jo Bonnier / Reine Wisell | Lola T70 Mk.3B GT Chevrolet | Ecurie Bonnier/Scuderia Filipinetti | 1:25.8000 |
| 5th | 3 | Peter Gethin / Mike Hailwood | Mirage M1 Ford | Malcolm Guthrie Racing | 1:26.9000 |
| 6th | 10 | Willi Kauhsen / Herbert Schultze | Porsche 908/02 | German B.G. Racing Team | 1:27.0000 |
| 7th | 4 | Doug Serrurier / Jackie Pretorius | Lola T70 Ford | L. D. Serrurier | 1:27.8000 |
| 8th | 11 | Gerhard Koch / Hans-Dieter Dechent | Porsche 908/02 Flunder | German B.G. Racing Team | 1:28.8000 |
| 9th | 17 | Digby Martland / Charles Lucas | Chevron B16 Ford | Chevron Cars/Richter Motors | 1:29.4000 |
| 10th | 16 | Tim Schenken / John Hine | Chevron B16 Ford | Chevron Cars/Richter Motors | 1:29.5000 |
| 11th | 8 | Malcolm Guthrie / Paddy Driver | Ford GT40 | Malcolm Guthrie Racing | 1:30.4000 |
| 12th | 19 | Denis Joubert / Clarrie Taylor | Chevron B8 BMW | D. R. Joubert | 1:33.3000 |
| 13th | 20 | Jack Holme / John Rowe | Chevron B8 BMW | J. Holme | 1:35.1000 |
| 14th | 6 | Alistair Walker / Robin Widdows | Ferrari 330 P4 | Alistair Walker | 1:37.8000 |
| 15th | 21 | Clive van Buuren / Bruce van der Merwe | Porsche 906 | C. van Buuren | 1:37.9000 |
| 16th | 18 | Ronnie Hare / Trevor Blokdyk | Elfin T300 Climax | R. Hare | 1:38.8000 |
| 17th | 15 | William Young / Brian Ferreira | Palbin - BMW | B. E. F. Barry | 1:42.2000 |
| 18th | 22 | Des Zank / Lawrence Hoo-Foster | Lotus 23B Ford | D. C. Zank | 1:42.9000 |
| 19th | 34 | Basil van Rooyen / Dave Charlton | Alfa Romeo GTV | Superformance Racing Team | 1:46.3000 |
| 20th | 24 | Peter Markham / Frank Wingels | BMW 2002 Ti | Richter Motors Racing | 1:46.3000 |
| 21st | 28 | Scamp Porter / Geoff Mortimer | Renault 8 Gordini | Team Renault | 1:47.2000 |
| 23rd | 29 | Phil Porter / Chris Swanepoel | Renault 8 Gordini | Team Renault | 1:47.5000 |
| 24th | 25 | Danny Alderton / John Conchie | Alfa Romeo GTA | Alderton Motors | 1:47.8000 |
| 25th | 35 | Arnold Chatz / Colin Burford | Volvo 142 S | Team Lawson | 1:49.1000 |
| 26th | 23 | John Truter / Keith Berrington-Smith | Bramhill - Ford | Horner Bros. | 1:49.4000 |
| 27th | 36 | Pat Sonnenschein / Christine Beckers | Alfa Romeo Berlina | Superformance Racing Team | 1:51.1000 |
| 28th | 32 | Guy Tunmer / Pieter Wapenaar | Austin Mini-Cooper S | Team Paradise Beach | 1:51.1000 |
| 29th | 27 | John Abrahams / Dirk Marais | Alfa Romeo GTV | Ray's Racing Team | 1:51.2000 |
| 30th | 33 | Jan Hettema / Eddie Keizan | Toyota GT5 coupé | Team Toyota | 1:51.4000 |
| 32nd | 31 | Alberto Leitão / Fernando Natividade | Honda S800 | Ciclomotores LDA | 1:51.6000 |