The fourth-generation 4A-GE engine was produced from 1991 to 1995. It's got silver cam handles with chrome lettering, consequently the nickname "silver best". This engine over again attributes a totally new cylinder head which employs 5 valves for each cylinder in lieu of 4. It uses Toyota's Variable Valve Timing https://holdenxoewm.pointblog.net/4age-20v-itb-options-89765704