PORSCHE RACING HISTORYJoseph Hamilton (USA)
1978
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 87 | Porsche 911 S | GTU | Pedro Vazquez (USA)/Ron Oyler (USA)/Joseph Hamilton (USA)/Gunter Hamilton (USA) | Pedro Vazquez, Jr. (USA) | 43rd | 15th | 67th | 360 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 88 | Porsche 911 S | GTU | Joseph Hamilton (USA)/Chuck Wade (USA)/Ron Collins (USA) | Hamilton House Racing | 27th | 12th | 47th | 167 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 88 | Porsche 911 S | GTU | Joseph Hamilton (USA)/Chuck Wade (USA) | Hamilton House Racing | 21st | 7th | 39th | 57 laps |
8 July 1978 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 88 | Porsche 911 S | TA 2 | Joseph Hamilton (USA)/Ron Collins (USA)/Chuck Wade (USA) | Hamilton House Racing | 34th | 17th | 36th | 72 laps - Accident |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 88 | Porsche 911 S | GTU | Joseph Hamilton (USA)/Rob Hoskins (USA)/Chuck Wade (USA) | Hamilton House Racing | 40th | 8th | 48th | 40 laps - DNF |