larryeod Posted May 13, 2016 Report Share Posted May 13, 2016 Can anyone decode this for me. 9M318 03210936. I think the first number indicates the build year of 89. Not sure about the M and then of course 318 is the engine size. I have no clue about the last 8 numbers. Thanks Larry Quote Link to comment Share on other sites More sharing options...
Golden-Arm Posted July 10, 2016 Report Share Posted July 10, 2016 those aren't engine codes, they're block casting numbers. the first group are a date and c.i.d. number. the second set, is the actual cast number, for the block. moparts.com is the place to go, for detailed engine info. Quote Link to comment Share on other sites More sharing options...
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