PORSCHE RACING HISTORYJohn Buffum (USA)
1971 : Daytona 24 Hours - 2nd in class
31 January 1971 - Daytona 24 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 19 | Porsche 914/6 | 914 043 0691 | GT2.5 | Stephen Behr (USA)/John Buffum (USA)/Erwin Kremer (D) | Ralph Meaney (USA) | 8th | 2nd | 32nd | 571 laps |
20 March 1971 - Sebring 12 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 29 | Porsche 914/6 | 914 043 0691 | GT2.5 | Stephen Behr (USA)/Charles Pete Conrad (USA)/John Buffum (USA) | Ralph Meaney, Inc. (USA) | NC | 31st | 112 laps |