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Thread: Need help identifying 6.5 blocks

  1. #1
    Join Date
    Nov 2022
    Location
    Louisiana
    Posts
    3

    Default Need help identifying 6.5 blocks

    12552929 and 10149599.thanks

  2. #2
    Join Date
    Dec 2003
    Location
    Yukon Canada
    Posts
    1,463

    Default

    What help do you need?
    you have casting numbers which identify the blocks.A 599 block is the one everyone wants crack free to start with
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews

  3. #3
    Join Date
    Apr 2001
    Location
    Newberg Oregon
    Posts
    11,862

    Default

    The 599 block is a non squirt block (No piston coolers) and has the large outer main bearing bolts
    I have seen these in the 1994 Burbs and pickups.

    A crack free 599 block is a good find.....
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2007 Chevy Avalanche
    THIS IS BOW TIE COUNTRY

  4. #4
    Join Date
    Nov 2022
    Location
    Louisiana
    Posts
    3

    Default

    Casting number is.D073

  5. #5
    Join Date
    Nov 2022
    Location
    Louisiana
    Posts
    3

    Default

    The 929 is.A265

  6. #6
    Join Date
    Apr 2001
    Location
    Newberg Oregon
    Posts
    11,862

    Default

    The D073 is the date code April 7th 1993 casting date

    "D" January is an A February is a "B" and so on
    "07" Seventh day
    "3" 1993


    The Block being referenced as "929" .....This is the last 3 digits of a 6.5 diesel block....Circa 1993
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2007 Chevy Avalanche
    THIS IS BOW TIE COUNTRY

  7. #7
    Join Date
    Feb 2000
    Location
    Montana
    Posts
    11,182

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