| Type: | CUST |
| Description: | 31st New Zealand Grand Prix |
| Grand Prix: | New Zealand |
| Country: | New Zealand |
| Location: | Pukekohe Park Raceway, Pukekohe, New Zealand |
| Date: | 16 December |
| Year: | 1984 |
| Course: | Permanent racing facility |
| Course Mi: | 1.76 |
| Course Km: | 2.82 |
| Distance Laps: | 32 |
| Distance Mi: | 56.32 |
| Distance Km: | 90.24 |
| Pole Driver: | Davy Jones |
| Pole Country: | United States |
| Pole Team: | Rick Shea Racing |
| Pole Time: | 0.57.360 |
| Fast Driver: | Davy Jones |
| Fast Team: | Rick Shea Racing |
| Fast Time: | 0.57.560 |
| Fast Country: | United States |
| First Driver: | Ross Cheever |
| First Country: | United States |
| First Team: | John Brandon Team |
| Second Driver: | Ken Smith |
| Second Country: | New Zealand |
| Second Team: | Apple Car Company |
| Third Driver: | Jeff MacPherson |
| Third Country: | United States |
| Third Team: | Allan McCall Racing |
The 1985 New Zealand Grand Prix was a race held at the Pukekohe Park Raceway on 16 December 1984. It was the 31st running of the New Zealand Grand Prix and was won by American Ross Cheever. The podium was completed by New Zealander Ken Smith and fellow American Jeff MacPherson.
| Pos | No. | Driver | Entrant | Car | Time | Grid |
|---|---|---|---|---|---|---|
| 1 | 1 |  Davy Jones | Rick Shea Racing | Ralt RT4/85 / Ford BDD | 0.57.36 | 1 |
| 2 | 41 |  Dave McMillan | More Magazine | Ralt RT4/82 / Ford BDD | 0.57.36 | 2 |
| 3 | 2 | Ross Cheever | John Brandon Team | Ralt RT4/85 / Ford BDD | 0.58.01 | 3 |
| 4 | 70 | Jeff MacPherson | Allan McCall Racing | Ralt RT4/83 / Ford BDD | 0.58.20 | 4 |
| 5 | 11 | Ken Smith | Apple Car Company | Ralt RT4/82 / Ford BDD | 0.58.29 | 5 |
| 6 | 6 | Brett Riley | Eric Morgan Racing | Ralt RT4/82 / Ford BDD | 0.58.32 | 6 |
| 7 | 3 |  Charlie O'Brien | Charlie O'Brien Racing | Ralt RT4/83 / Ford BDD | 0.58.47 | 7 |
| 8 | 4 | Ross Cameron | Rick Shea Racing | Ralt RT4/81 / Ford BDD | 0.58.60 | 8 |
| 9 | 5 | Tom Blackaller | Rick Shea Racing | Ralt RT4/83 / Ford BDD | 0.59.40 | 9 |
| 10 | 19 | Riley Hopkins | Riley Hopkins Racing | Ralt RT4/82 / Ford BDD | 0.59.76 | 10 |
| 11 | 54 | Peter Haskett | JCL Group | Chevron B49 / Ford BDD | 1.00.23 | 11 |
| 12 | 7 | Ross Zampatti | Ross Zampatti Racing | Ralt RT4/82 / Ford BDD | 1.01.23 | 12 |
| Pos | No. | Driver | Entrant | Laps | Time/Retired | Grid | ||
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | Ross Cheever | John Brandon Team | 32 | 37min 20.22sec | 3 | ||
| 2 | 11 | Ken Smith | Apple Car Company | 32 | + 24.83 s | 5 | ||
| 3 | 70 | Jeff MacPherson | Allan McCall Racing | 32 | + 39.49 s | 4 | ||
| 4 | 19 | Riley Hopkins | Riley Hopkins Racing | 32 | + 1:31.31 s | 10 | ||
| 5 | 5 | Tom Blackaller | Rick Shea Racing | 31 | + 1 lap | 9 | ||
| 6 | 54 | Peter Haskett | JCL Group | 29 | + 3 laps | 11 | ||
| 7 | 41 | Dave McMillan | More Magazine | 22 | + 10 laps | 2 | ||
| Ret | 7 | Ross Zampatti | Ross Zampatti Racing | 17 | Accident | 12 | ||
| Ret | 3 | Charlie O'Brien | Charlie O'Brien Racing | 10 | Throttle | 7 | ||
| Ret | 1 | Davy Jones | Rick Shea Racing | 6 | Accident | 1 | ||
| DNS | 4 | Ross Cameron | Rick Shea Racing | Did Not Start | ||||
| DNS | 6 | Brett Riley | Eric Morgan Racing | Did Not Start | ||||
| DNP | 12 | Heather Spurle | Heather Spurle Racing | Did Not Participate | ||||
| Source(s): [1] | ||||||||