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  • 1 Post By Mcnwil

Thread: Small block numbers ID help
          
   
   

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  1. 06-05-2019 06:09 PM #1
    Mcnwil
    Mcnwil is offline CHR Member
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    Small block numbers ID help

     



    Have a small block that I recently purchased and was told it was a GM crate motor. Upon further inspection I found the casting number 3970010 on the block which I see online as a 69-79 350 2 or 4 bolt mains. Only other numbers I see in that area is a K 1 above the oil filter casting. The numbers on the passenger side deck are confusing to me as they are 151198602 with a space separation and K04. What are these numbers and the K04 designation? The heads are 333882, 74-80 76cc.
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  3. 06-05-2019 07:08 PM #2
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    NTFDAY
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    https://www.mortec.com/
    How to decode Chevy Engine Codes
    Chevy Identification Numbers

    One of these web sites should help.
    Ken Thomas
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  4. 06-06-2019 05:52 PM #3
    Mcnwil
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    Quote Originally Posted by NTFDAY View Post
    https://www.mortec.com/
    How to decode Chevy Engine Codes
    Chevy Identification Numbers

    One of these web sites should help.
    Thanks, have tried those but these numbers do not match any listings I have seen.
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  5. 06-07-2019 05:46 PM #4
    Mcnwil
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    Found the remaining info on nastyz28.com. Turn out to be a 1974 350 police T400 built in Canada and the heads are correct as 74 as well.
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