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How can I tell if I have a 455 Oldsmobile engine?

Discussion in 'General Discussion' started by 44minimum, Apr 29, 2011.

  1. 44minimum

    44minimum Sharpshooter Member

    Joined:
    Aug 20, 2007
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    Location:
    choctaw
    I've got a few engines lying around that I'm going to sell and one of them is a 1970 455 Oldsmobile, but I'm not sure which one it is. Is there a way to identify it by the casting numbers on the head or the block or something?
     
  2. Shoot Summ

    Shoot Summ Sharpshooter Member

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    Tulsa
    Google "how to identify a 455 oldsmobile engine"
     
  3. twocan

    twocan Sharpshooter Member

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    Its the big one with little valve covers
     
  4. cyberslider

    cyberslider Sharpshooter Member

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    The head casting "numbers" should be letters (like "C" or "E") if they are 455 heads, I believe the smaller blocks (403, 350, etc) have actual numbers (like "3" or "8")

    Edit: Also - a big block (400, 425, 455) measures 14" between the heads at the manifold base, small blocks (330, 350, 403) measure 12"
     
  5. HMFIC

    HMFIC Sharpshooter Member

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    When you run it over 6000 RPM for about a half hour and end up spinning a main bearing and luckily not blowing the whole bottom end out.

    At least that's what I did...

    Olds motors are notorious for blowing all the oil up to the top end at higher RPM. But I still love 'em. Great torque.
     
  6. KenL

    KenL Sharpshooter Member

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    Oct 30, 2010
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    Location:
    Cashion
    There will be an oil fill tube at the front of the engine.

    Edit: That is if you're trying to ID it as an Olds motor in general...
     
  7. Tanksta

    Tanksta Sharpshooter Member

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    Jun 9, 2010
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    Location:
    Checotah, OK
    Post a photo of it.
     
  8. Veggie Meat

    Veggie Meat Sharpshooter Member

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    El Reno

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