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Thread: Engine code

  1. #1
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    Engine code

    Hi everyone just became the new owner of a 57 bel air 4door sedan most of it is original I'm having trouble identifying if the engine is original to the car the block casting comes up as a 57 283 220hp which is correct but the front pad #s semi to be f611c or f6iic it's got me stumped any help would be awesome thank you

  2. #2
    Administrator 567chevys's Avatar
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    Oct 2010

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    Kelso,Washington
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    Best I have came up with is
    (F) Flint Motor
    (6) 1956
    The other #'s No clue , Can you Post of Picture of the Stamp Please


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    1955 2 DR Post
    1937 Chevy Coupe
    2015 Chevy HD2500 duramax crew Cab LTZ
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  3. #3
    Registered Member BamaNomad's Avatar
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    The Chevy guy posted: "Hi everyone just became the new owner of a 57 bel air 4door sedan most of it is original I'm having trouble identifying if the engine is original to the car the block casting comes up as a 57 283 220hp which is correct but the front pad #s semi to be f611c or f6iic it's got me stumped any help would be awesome thank you"
    ---------------------------------------

    What was the casting no you found (and date) on the back of the block?

    The 'C' suffix in 1957 was used only for a 265 ci engine (used only with 2 bbl carb and 3sp trans that year). The first 'F' in the suffix simply means that the engine was built/assembled in Flint, MI. The 6II or 611 is the assembly date for the engine (June 11) of whichever year it was built. The casting no and date will provide the YEAR that the engine was assembled and used.

    PS. The 'C' suffix code was also used for '58-64 283 ci engines but always with 2 bbl cars and Manual trans. The C code was never used on a 4-bbl engine, or with an automatic transmission.

  4. #4
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    Great thanks

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