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Thread: Help identifying nailhead engine

  1. #1
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    Help identifying nailhead engine

    Hi I am a newbie
    I bought a short block Nailhead and I am not able to decode any of the numbers that are on it using this web site or any of my books.
    casting number is 1176201, Engine code in the front is PB, Serial number 7D2013580, Serial number I3I468
    it also has popup pistons that look that they my be factory.
    If anyone can help me decode the block I would really appreciate it
    Thanks
    John J

  2. #2
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    7D2013580 = serial number (VIN) of donor car
    7 = Series 70/Roadmaster
    D = 1957 model year
    2 = South Gate, CA
    013580 = sequential number, range for South Gate was 001001 to 038462




    131468 = engine serial number, just a sequential number
    (the I's are meant to be read as 1's)


    The only engine Buick made in 1957 was the 364 nailhead. You say the engine code is PB, but Buick didn't start using an engine production code until the 1959 model year, so if you can post a picture of that we can see what you are looking at.
    Sean Smith
    BCA# 42746
    MBCC# 2122
    SAH# 4186
    Buickman Award 2015

    1957 Special 4-door Riviera (hardtop) model 43

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