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Technical Help with Pontiac Block ID

Discussion in 'The Hokey Ass Message Board' started by alteredpilot, Feb 11, 2026 at 6:22 PM.

  1. It's a YC code block. The stamping is 597496 I've been through about 10 different lists and I can't find these numbers. Any help? Thanks in advance.
     
  2. GuyW
    Joined: Feb 23, 2007
    Posts: 855

    GuyW
    Member

    389 ci 290 hp WC,YC,YD YC = automatic
     

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