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Technical 300 HP 350 Casting date confusion

Discussion in 'The Hokey Ass Message Board' started by EZ Cool, Jan 15, 2017.

  1. EZ Cool
    Joined: Nov 17, 2011
    Posts: 260

    EZ Cool
    Alliance Vendor

    I have a motor I pulled out of a 69 Impala. The engine suffix is HN which shows it go be a 300 HP 350. The serial number is 19L044219 which shows it to be a 1969. Heres where the confusion starts. There is no date cast in to the usual place on the rear of the block or anywhere else on the engine in the usual format. On the right side of the block the numbers 9 3 and 7 are cast. See pic below. Is this actually a casting date in another format? Was hoping someone can shed some light on this.
    [​IMG]
     
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 43,702

    squirrel
    Member

    never seen that....neat! Looks almost like a Mopar casting date :)
     
  3. EZ Cool
    Joined: Nov 17, 2011
    Posts: 260

    EZ Cool
    Alliance Vendor

    Wow, I stumped the squirrel! I thought you would have the definitive answer!
     
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 43,702

    squirrel
    Member

    There's a whole bunch of stuff I don't know about!

    but you can see what the assembly date is, on the other number stamped on the block. The four digits just before the HN are the month and day
     
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  5. EZ Cool
    Joined: Nov 17, 2011
    Posts: 260

    EZ Cool
    Alliance Vendor

    They are VO312
     
  6. squirrel
    Joined: Sep 23, 2004
    Posts: 43,702

    squirrel
    Member

    March 12th 1969 does not seem to have anything to do with those cast numbers.
     
  7. saltracer219
    Joined: Sep 23, 2006
    Posts: 639

    saltracer219
    Member

    Possibly Canadian, does the prefix on the stamped I.D. start with MC? if so it was made in the McKinnon(spelling) Canadian plant
     
    squirrel likes this.
  8. Are you going to build it or shop it around ? My casting books are at my man cave.......
     

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