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Thread: Casting numbers?
          
   
   

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  1. #1
    SLAMMDS15's Avatar
    SLAMMDS15 is offline CHR Member Visit my Photo Gallery
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    Feb 2004
    Location
    Peterborough
    Car Year, Make, Model: 86 GMC S-15 SBC powered
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    65

    Casting numbers?

     



    Could some one tell me or direct me to where I can find out what theses numbers mean 3898920, GM-5, F-29-3, They are on the heads of my smb.

  2. #2
    Matt167's Avatar
    Matt167 is offline CHR Member Visit my Photo Gallery
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    Prattsville
    Car Year, Make, Model: '51 Chevy Fleetline and a Ratrod project
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    I looked it up through www.mortec.com and found it to be a 1972- 1973 350 but, I could not find your exzact number I only found 3998920 so, recheck ur numbers cause that first 8 could be easily mistaken for a 9 on a motor that old.
    You don't know what you've got til it's gone

    Matt's 1951 Chevy Fleetline- Driver

    1967 Ford Falcon- Sold

    1930's styled hand built ratrod project

    1974 Volkswagen Super Beetle Wolfsburg Edition- sold

  3. #3
    SLAMMDS15's Avatar
    SLAMMDS15 is offline CHR Member Visit my Photo Gallery
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    Feb 2004
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    Peterborough
    Car Year, Make, Model: 86 GMC S-15 SBC powered
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    thanks for the info, much appreciated.
    I've got the itch to lay some rubber down!!! ~Thanks grampa! its been 10 years worth of work, I just wish you could see it~

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