EntrantsGridGrand PrixStandings
| Pos | Nr | Driver | Car | Engine | Tyre | Time | Laps | 
|---|---|---|---|---|---|---|---|
| 1 | 1 |  Dave Charlton |  McLaren M23 [2] | Ford Cosworth DFV V8 3.0 | - | 01:16.760 | 0 | 
| 2 | 6 |  Ian Scheckter |  Lotus 72E [R6] | Ford Cosworth DFV V8 3.0 | - | 01:17.210 | 0 | 
| 3 | 2 |  Eddie Keizan |  Lotus 72D [R3] | Ford Cosworth DFV V8 3.0 | - | 01:18.500 | 0 | 
| 4 | 5 |  Paddy Driver |  Lotus 72E [R7] | Ford Cosworth DFV V8 3.0 | - | 01:19.390 | 0 | 
| 5 | 9 |  John McNicol |  March 721 [1] | Ford Cosworth DFV V8 3.0 | - | 01:20.180 | 0 | 
| 6 | 11 |  Guy Tunmer |  Chevron B25 [25-73-02] | Ford Cosworth FVC Smith L4 1.9 | - | 01:22.090 | 0 | 
| 7 | 7 |  Mike Domingo |  Brabham BT33 [1-2] | Ford Cosworth DFV V8 3.0 | - | 01:24.740 | 0 | 
| 8 | 12 |  Brian von Hage |  Chevron B25 [25-73-03] | Ford Cosworth FVC Smith L4 1.9 | - | 01:25.400 | 0 | 
| 9 | 21 |  Peter Haller |  Surtees TS5A [007] | Ford V8 5.0 | - | 01:25.620 | 0 | 
| 10 | 15 |  Tony Martin |  Chevron B25 [25-73-01] | Ford Cosworth FVC Smith L4 1.9 | - | 01:26.340 | 0 | 
| 11 | 17 |  John Amm |  Brabham BT38 [12] | Ford BDA L4 2.0 | - | 01:27.060 | 0 | 
| 12 | 16 |  Gary Ainscough |  Lotus 69 [59-XB/F3-38] | Ford Cosworth FVC L4 1.8 | - | 01:28.820 | 0 | 
| 13 | 20 |  Nolly Limberis |  Surtees TS5 [002] | Ford V8 5.0 | - | 01:28.850 | 0 | 
| 14 | 24 |  Bill Scheepers |  McLaren M10B [400-17] | Chevrolet V8 5.0 | - | 01:29.660 | 0 | 
| 15 | 25 |  Joe Domingo |  McLaren M10B [400-16] | Ford V8 5.0 | - | 01:29.840 | 0 | 
| 16 | 23 |  Fred Cowell |  Lola T190 [190/F1/5] | Ford V8 5.0 | - | 01:31.790 | 0 | 
| 17 | 14 |  Glenn Martin |  Chevron B20 [72-8] | Ford Cosworth FVC L4 1.8 | - | 01:33.870 | 0 | 
| 18 | 19 |  Kipp Ackermann |  McLaren M10B [400-08] | Chevrolet V8 5.0 | - | 0 | 
| Official Name | 13th Republic Day Trophy | 
|---|---|
| Circuit | Kyalami | 
| Date | May 25 | 
| Pole | Dave Charlton 01:16.760 | 
| Fastest Lap | Dave Charlton 01:17.050 | 
| Podium | 1st Dave Charlton (21) , 2nd Eddie Keizan, 3rd Ian Scheckter (11) | 
| Prev race | Cape South Easter Trophy May 4 | 
| Next race | Brandkop Winter Trophy June 15 | 
| P | N | Driver | Team | Car | Engine | Tyre | Time | Laps | FL | Led | Gr | Pts | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 |  Dave Charlton | Scuderia Scribante |  McLaren M23 [2] | Ford Cosworth DFV V8 3.0 | - | 00:41:48.870 | 32 | 01:17.050 | 21 | 1 | 10 | 
| 2 | 2 |  Eddie Keizan | Alex Blignaut |  Lotus 72D [R3] | Ford Cosworth DFV V8 3.0 | - | +0 laps | 32 | 0 | 3 | 8 | |
| 3 | 6 |  Ian Scheckter | Team Gunston |  Lotus 72E [R6] | Ford Cosworth DFV V8 3.0 | - | +0 laps | 32 | 11 | 2 | 6 | |
| 4 | 5 |  Paddy Driver | Team Gunston |  Lotus 72E [R7] | Ford Cosworth DFV V8 3.0 | - | +0 laps | 32 | 0 | 4 | 4 | |
| 5 | 9 |  John McNicol | Scuderia Scribante |  March 721 [1] | Ford Cosworth DFV V8 3.0 | - | +1 lap | 31 | 0 | 5 | 3 | |
| 6 | 11 |  Guy Tunmer | Lexington Racing |  Chevron B25 [25-73-02] | Ford Cosworth FVC Smith L4 1.9 | - | +2 laps | 30 | 0 | 6 | 2 | |
| 7 | 7 |  Mike Domingo | Team Domingo |  Brabham BT33 [1-2] | Ford Cosworth DFV V8 3.0 | - | +3 laps | 29 | 0 | 7 | 0 | |
| 8 | 15 |  Tony Martin | South Coast Motors |  Chevron B25 [25-73-01] | Ford Cosworth FVC Smith L4 1.9 | - | +3 laps | 29 | 0 | 10 | 0 | |
| 9 | 12 |  Brian von Hage | Lexington Racing |  Chevron B25 [25-73-03] | Ford Cosworth FVC Smith L4 1.9 | - | +3 laps | 29 | 0 | 8 | 0 | |
| 10 | 17 |  John Amm | John Amm |  Brabham BT38 [12] | Ford BDA L4 2.0 | - | +4 laps | 28 | 0 | 11 | 0 | |
| DNF | 14 |  Glenn Martin | South Coast Motors |  Chevron B20 [72-8] | Ford Cosworth FVC L4 1.8 | - | Withdrawn | 20 | 0 | 17 | 0 | |
| DNF | 21 |  Peter Haller | Team Molyslip |  Surtees TS5A [007] | Ford V8 5.0 | - | Withdrawn | 10 | 0 | 9 | 0 | |
| DNF | 20 |  Nolly Limberis | Power Developments |  Surtees TS5 [002] | Ford V8 5.0 | - | Withdrawn | 10 | 0 | 3 | 0 | |
| DNF | 23 |  Fred Cowell | Fred Cowell |  Lola T190 [190/F1/5] | Ford V8 5.0 | - | Withdrawn | 9 | 0 | 16 | 0 | |
| DNF | 25 |  Joe Domingo | Team Domingo |  McLaren M10B [400-16] | Ford V8 5.0 | - | Engine | 8 | 0 | 15 | 0 | |
| DNF | 16 |  Gary Ainscough | Gary Ainscough |  Lotus 69 [59-XB/F3-38] | Ford Cosworth FVC L4 1.8 | - | Engine | 0 | 0 | 12 | 0 | |
| DNS | 19 |  Kipp Ackermann | G. S. Ackermann |  McLaren M10B [400-08] | Chevrolet V8 5.0 | - | Fuel pressure | 0 | 0 | 18 | 0 | |
| DNS | 24 |  Bill Scheepers | Bill Scheepers |  McLaren M10B [400-17] | Chevrolet V8 5.0 | - | DNS | 0 | 0 | 14 | 0 | 
| Pos | Driver | Team | Pts | 
|---|---|---|---|
| 1 |  Dave Charlton |  McLaren | 30 | 
| 2 |  Ian Scheckter |  Lotus | 17 | 
| 3 |  Paddy Driver |  Lotus | 16 | 
| 4 |  Eddie Keizan |  Lotus | 12 | 
|  Tyrrell | |||
| 5 |  John McNicol |  March | 11 | 
| 6 |  Guy Tunmer |  Chevron | 6 | 
| 7 |  Mike Domingo |  Brabham | 3 | 
| 8 |  Tony Martin |  Chevron | 2 |