Related Clues:

• Intensifies, with ''up''
• Cranks up the V-8
• Promotes heavily
• Prepares for dragging
• Rotations of a motor, in short
• Tach count
• Powers (up)
• Oversized plugs
• Publicizes extravagantly
• Accelerates, as a hotrod
• Units of engine speed (abbr)
• Invigorates, with "up"
• Quick spins?
• Spices (up)
• Gives gas