The 1973 Australian Sports Car Championship was a CAMS sanctioned motor racing title open to Group A Sports Cars and Group D Production Sports Cars.[1] It was the fifth Australian Sports Car Championship.[2] The title was won by South Australian Phil Moore,[2] driving a 2.5 litre Repco V8 - engined Elfin 360.[3]
The championship was contested over a six round series with one race per round.[3]
| Round | Circuit | State | Date[4] | Winning driver | Car | |
| 1 | Phillip Island | Victoria | 28 January | Phil Moore | Elfin 360 Repco | |
| 2 | Adelaide International Raceway | South Australia | 8 April[5] | Lionel Ayers | Rennmax Repco | |
| 3 | Sandown | Victoria | 8 July | Phil Moore | Elfin 360 Repco | |
| 4 | Wanneroo Park | Western Australia | 12 August[6] | Lionel Ayers | Rennmax Repco | |
| 5 | Symmons Plains | Tasmania | 11 November | Phil Moore | Elfin 360 Repco | |
| 6 | Oran Park | New South Wales | 8 December | Phil Moore | Elfin 360 Repco |
Car competed in two engine displacement classes:[1]
Championship points were allocated on a 9-6-4-3-2-1 basis to the first six place-getters in each class[1] at each round. Additional points were awarded on a 4-3-2-1 basis to the first four outright place-getters, regardless of class,[1] at each round.
| Position | Driver | Car | Entrant | Phillip Is. | Adelaide | Sandown | Wanneroo | Symmons | Oran Pk. | Total | |
| 1 | Phil Moore | Elfin 360 Repco | 13 | - | 13 | - | 13 | 13 | 52 | ||
| 2 | Lionel Ayers | Rennmax Repco | Lionel Ayers | - | 13 | 12 | 13 | - | - | 38 | |
| 3 | Ray Strong | Chevron B8 BMW | McLean-Strong Auto Clinic | - | 8 | 5 | 4 | - | 9 | 26 | |
| 4 | Graeme Crawford | Elva BMW | Graeme Crawford | 9 | - | 8 | 7 | - | - | 24 | |
| = | Henry Michell | Elfin 360 Repco | H Michell | - | 12 | - | 12 | - | - | 24 | |
| 6 | Robin Pare | Elfin ME5 Chevrolet | - | - | - | - | 12 | - | 12 | ||
| 7 | John Latham | Bolwell Nagari | - | - | - | - | - | 10 | 10 | ||
| 8 | Dick Sorenson | 4 | 5 | - | - | - | - | 9 | |||
| 9 | Stuart Kostera | Matich SR3 Ford | Stuart Kostera Racing | - | - | - | 8 | - | - | 8 | |
| = | Max Thompson | Elfin 400 Ford | - | - | - | - | 8 | - | 8 |
Only the top ten championship positions are shown in the above table.