Trevor Boys NASCAR Cup Series results at Darlington
| Year | Race # | Start | Finish | Car # | Sponsor | Engine | Owner | Crew Chief | Qualifying Speed | Laps | X Led | Laps Led | Status | Money | Points |
| 1983 | 22 | 30 | 28 | 48 | Hylton-McCaig | Chevrolet | Hylton | | | 217 | 0 | 0 | accident | 3745 | 79 |
| 1984 | 7 | 34 | 16 | 48 | Jim Testa Chevrolet | Chevrolet | Hylton | | | 344 | 0 | 0 | sway bar | 5335 | 115 |
| 1984 | 22 | 29 | 11 | 48 | Hylton-McCaig | Chevrolet | Hylton | | | 351 | 0 | 0 | running | 7780 | 130 |
| 1985 | 6 | 27 | 29 | 98 | McCaig Racing | Chevrolet | Benfield | | | 181 | 0 | 0 | accident | 1380 | 76 |
| 1985 | 20 | 30 | 31 | 49 | Hylton Racing | Chevrolet | Hylton | | | 134 | 0 | 0 | accident | 4100 | 70 |
| 1986 | 6 | 30 | 24 | 6 | U.S. Racing | Chevrolet | Ulrich | | | 227 | 0 | 0 | brakes | 5575 | 91 |
| 1987 | 21 | 30 | 36 | 12 | Gorman's Esso | Oldsmobile | Hamby | | | 126 | 0 | 0 | accident | 4560 | 0 |
