| Answer | Crossword Clue |
|---|---|
| RAMJET | Powerful engine |
| TURBOJET | Powerful engine |
| TURBO | Powerful engine |
| VTEN | Powerful engine |
| VSIX | Rather powerful engine |
| HEMI | Powerful auto engine |
| VTEN | Powerful auto engine |
| VSIX | Powerful auto engine |
| HEMI | Powerful engine, informally |
| HEMI | Powerful Chrysler engine |
| TURBO | Extra-powerful engine |
| HEMI | Powerful car engine |
| VTEN | Powerful car engine |
| HEMI | Powerful pickup truck engine |
| VTEN | Powerful kind of engine |
| GOOGLES | Uses a powerful engine |
| TURBOJET | Powerful type of engine |
| HEMI | Powerful car engine, informally |
| SOUPEDUP | Manipulated to be more powerful, as an engine |
