dek1581 Posted February 22, 2016 Share Posted February 22, 2016 was looking at engine and wanted to know if there was a way to find out what rig it came out of? also, up to this point I never heard of a mack T677 engine before. model # is ETSZ677 serial # is 9S1893. as per seller it is a mack 350 2 valve 1979 or 1980... Quote Link to comment https://www.bigmacktrucks.com/topic/44110-engine-serial-number/ Share on other sites More sharing options...
theakerstwo Posted February 22, 2016 Share Posted February 22, 2016 Mack can tell you if its not too old. 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/44110-engine-serial-number/#findComment-325359 Share on other sites More sharing options...
j hancock Posted February 22, 2016 Share Posted February 22, 2016 I can't give an exact year but that is indicated as a 350 built with turbo and two stage aftercooler. The "Z" is for an emissions rating that was used through 1979. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/44110-engine-serial-number/#findComment-325371 Share on other sites More sharing options...
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