Related Clues:

• Races, as the engine
• Cranks (up)
• Revolutions, slangily
• Info. from a tachometer
• Races (the engine)
• Guns, Indy style
• Short turns?
• Charges (up)
• Wedding parties?: Abbr.
• Races, as an engine
• ___ up (increases in strength)
• Fires (up)
• Amps up
• Accelerates, with 'up'
• Guns, Indy-style