PORSCHE RACING HISTORYJohn Morton (USA)
1980
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 13 | Porsche 935 | 930 770 0905 | GTX | Randolph Townsend (USA)/John Morton (USA)/Howard Meister (USA) | Andial Racing (USA) | 61st | 17th | 13th | 52 laps - DNF |
27 April 1980 - Riverside 5 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 55 | Porsche 935 M16 | 930 890 0013 | GTX | Howard Meister (USA)/John Morton (USA) | Andial Racing/Meister Homes (USA) | 44th | 12th | 10th | 60 laps - Suspension Damage |