| Answer | Crossword Clue |
|---|---|
| SOUPUP | Improve a muscle car engine |
| HEMI | Muscle car engine |
| GTO | Muscle car in a 1964 song |
| VTEN | The muscle of a muscle car, maybe |
| JERKY | Rough, as a car engine |
| GTO | Old car with a 389 engine |
| GTO | Old car with a 409 engine |
| IGN | Device on a car engine: Abbr. |
| REDLINE | Risk damaging, as a car engine |
| FANBELT | Cooling device on a car engine. |
| IGN | Part of a car engine: Abbr. |
| SPARKER | The plug in a car engine. |
| ONELUNGER | Car with a single-cylinder engine: Slang. |
| REOIL | Maintain, in a way, as a car engine |
| DUALEXHAUST | Feature of many a V-8 engine car |
| BSIX | Vitamin whose name rhymes with a car engine |
