The fourth-technology 4A-GE engine was manufactured from 1991 to 1995. It's got silver cam addresses with chrome lettering, that's why the nickname "silver prime". This engine yet again features a very new cylinder head which works by using five valves per cylinder instead of 4. It employs Toyota's Variable Valve https://jdmtoyota4a-ge03567.affiliatblogger.com/91952998/an-unbiased-view-of-4age-20v-blacktop