| Date | Place |
Division |
Start |
Finish | Owner |
# |
Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar 20 1976 | Sebring International Raceway | IMSA GT | 61 | 35 | George Shafer | 99 | Datsun 240Z | 129 | engine | ||
| Mar 19 1977 | Sebring International Raceway | IMSA GT | 53 | 47 | George Shafer/Craig Shafer | 99 | Datsun 240Z | 89 | 100 | did not finish | |
| Mar 22 1980 | Sebring International Raceway | IMSA GT | 66 | 66 | George Shafer | 66 | Datsun 240Z | 37 | did not finish | ||
| Mar 21 1981 | Sebring International Raceway | IMSA GT/World Sports Car Championship | 33 | 29 | George R. Shafer | 83 | Chevrolet Camaro | 173 | running | ||
| Mar 20 1982 | Sebring International Raceway | IMSA GT | 65 | 29 | Shafer Concrete | 88 | Chevrolet Camaro | 144 | running |