PORSCHE RACING HISTORYDick Barbour (USA)
1978 : Daytona 24 Hours - 2nd overall : Talladega 6 Hours - 3rd overall : Le Mans 24 Hours - 1st in class : Watkins Glen 6 Hours - 2nd overall
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935/77A | 930 890 0033 | GTX | Dick Barbour (USA)/Manfred Schurti (FL)/Johnny Rutherford (USA) | Dick Barbour Racing (USA) | 2nd | 2nd | 8th | 650 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935/77A | 930 890 0033 | GTX | Dick Barbour (USA)/Rolf Stommelen (D)/Manfred Schurti (FL) | Dick Barbour Performance (USA) | 57th | 16th | 2nd | 47 laps - Suspension |
2 April 1978 - Talladega 6 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935/77A | 930 890 0033 | GTX | Dick Barbour (USA)/Johnny Rutherford (USA) | Dick Barbour Racing (USA) | 3rd | 3rd | 3rd | 161 laps |
30 April 1978 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 935/77A | 930 890 0033 | GTX | Dick Barbour (USA) | Dick Barbour Racing (USA) | 6th | 6th | 7th | 50 laps |
11 June 1978 - Le Mans 24 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 935/77A | 930 890 0024 | IMSA+2.5 | Brian Redman (GB)/John Paul Sr. (USA)/Dick Barbour (USA) | Dick Barbour Racing (USA) | 5th | 1st | 16th | 338 laps |
8 July 1978 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 935/77A | 930 890 0024 | Gr.5 | Rolf Stommelen (D)/Manfred Schurti (FL)/Dick Barbour (USA) | Dick Barbour Performance (USA) | 2nd | 2nd | 1st | 146 laps |