The fourth-generation 4A-GE engine was developed from 1991 to 1995. It has silver cam handles with chrome lettering, therefore the nickname "silver prime". This engine yet again features a totally new cylinder head which utilizes five valves per cylinder instead of 4. It utilizes Toyota's Variable Valve Timing (VVT) procedure https://4ageengineforsale35678.pages10.com/what-does-4age-blacktop-engine-for-sale-mean-75097687