Crossword clues for Speed the engine 3 lettersAnswerClueRPMEngine speed: Abbr.RPSEngine speed: Abbr.REVAccelerate engine speedRPMEngine speed meas.RPMEngine speed inits.RPMMeas. of engine speedRPMEngine speed no.RPMEngine speed, for shortREVSpeed the engineREVSpeed up an engineREVChange the speed of (an engine).REVSpeed up, as an engineTACHEngine speed gauge, brieflyRAMJETSpeed engine.RPMSEngine speeds: Abbr.REVSEngine speed, for shortOPENTHETHROTTLEIncrease engine speed fullyTACHEngine speed gaugeREVTEMPOGun, as an engine speed on a trackREVSSpeeds the engineREVUPIncrease, as an engine's speedRACEDRan with undue speed, as an engine.REVSSpeeds (up), as an engineRAMJETEngine that's optimal at supersonic speeds