57 Water Pump

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  • Michael K.
    Very Frequent User
    • September 1, 2004
    • 170

    #1

    57 Water Pump

    Is this the correct water pump for a 57 2x4? The "How to Rebuild Your Small Block Chevy" book has a picture of one that looks different for my year. The numbers on mine are: GM 21 37826(8)09(8) (I can't tell if they are a 6,8 or 9). It would be logical to me that the one I have is a replacement for the older version.




  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 42936

    #2
    Re: 57 Water Pump

    Mike-----

    The casting number is "3782608" on the pump you have. This pump is not correct for any 1957 Corvette. The pump you need to be "correct" is a casting of GM #3736493.

    I believe that the '608' pump could be used for your application as it's very similar to the '493'. However, it's not the "correct" pump/
    In Appreciation of John Hinckley

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