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Thread: Cast number on block

  1. #1
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    Cast number on block

    My 300 has a casting mark on right side of block ( passenger ) in the center just below where the head sits. They are 052 then just below that ML. I know what the ML is what is the 052 ?
    Ok I think I found out the answer in my manual, engine code number? Now another question what is a engine code number mean ?
    Last edited by GrayGhost3480; 07-10-2018 at 05:43 AM. Reason: Incorrect information

  2. #2
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    Cast numbers are raised, but I think you are referring to stamped numbers, in which case the two letters are the engine production code and the three numbers are a build date code.


    https://www.teambuick.com/reference/...gine_where.php
    https://www.teambuick.com/reference/...gine_63-75.php

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    Sean Smith
    BCA# 42746
    MBCC# 2122
    SAH# 4186
    Buickman Award 2015

    1957 Special 4-door Riviera (hardtop) model 43

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