Bill Seifert NASCAR Cup Series results at Islip
Back to Bill Seifert career stats
| Year | Race # | Start | Finish | Car # | Sponsor | Engine | Owner | Crew Chief | Qualifying Speed | Laps | X Led | Laps Led | Status | Money | Points |
| 1967 | 32 | 18 | 20 | 45 | '66 Ford | Seifert | 117 | 0 | 0 | accident | 100 | 0 | |||
| 1968 | 26 | 20 | 21 | 45 | '68 Ford | Seifert | 109 | 0 | 0 | withdrew | 100 | 0 | |||
| 1971 | 30 | 23 | 18 | 45 | '70 Ford | Seifert | 113 | 0 | 0 | transmission | 220 | 0 |
