| 1.5 cc Class 1 | |||||
| Pos | FEMA | Name | Nation | MPH | km/h |
| 1 | – | Glen Dye | USA | – | – |
| 3.5 cc Class 3 | |||||
| 1 | – | Glen Dye | USA | 158,851 | 255,646 |
| 5 cc Class 4 | |||||
| 1 | – | Gualtiero Picco | I | 180,108 | 289,856 |
| 10 cc Class 5 | |||||
| 1 | – | Paul-Otto Ströbel | CH | 207,585 | 334,076 |
| 2 | – | Gualtiero Picco | I | 207,047 | 333,21 |
| 3 | – | Steve Morse | USA | 198,803 | 319,942 |
| 4 | – | Dick Boone | USA | 196,809 | 316,733 |
| 5 | – | Loyd Torrey | USA | 193,741 | 311,796 |
| 6 | – | Jack Boudakian | USA | 192,773 | 310,238 |
| 7 | – | Rich Democh | USA | 190,28 | 306,226 |
| 8 | – | Stuart Hamill | USA | 187,725 | 302,114 |
| 9 | – | John Kuchta | USA | 185,085 | 297,865 |
| 10 | – | Marshall Ziegert | USA | 179,587 | 289,017 |
| – | Jack O’Donnell | USA | – | – |