engine I.D

Discussion in 'General Chevy & GMC Pickups Talk' started by 74X4Burb, Feb 8, 2005.

  1. 74X4Burb

    74X4Burb Member

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    I just bought a '79 4x4 1/2 suburban whith what I think is a 400 small block and I would like to check the numbers, anybody know of a website where I can do this. or could any of ya decipher em,any way here they are.T091CKL.Thanks for any help.Karl

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    Last edited: Mar 16, 2011
  2. 74X4Burb

    74X4Burb Member

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    oops.Sorry those numbers are T0912CKL.(these are the numbers on front).Karl

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    Last edited: Mar 16, 2011
  3. dvalentine

    dvalentine Charter Member

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    [updated:LAST EDITED ON Feb-08-05 AT 02:34 PM (CST)]Try here, http://www.mortec.com/castnum.htm

    The following is copied from Mortec's web site.

    "The block casting number on smallblock and big block Chevy V-8 motors is located on a ledge found at the rear of the block, most often on the driver's side. This ledge is below the deck of the block and the ledge forms the mating surface between the block and the transmission bellhousing. Some of the later model blocks have the casting number on the passenger side of this ledge. The number itself can have 6, 7 or 8 numeral digits. They might look like this "361959" or "3970010" or "14015445". The block casting numbers do not have any letters in them. There are sometimes individual letters found on blocks like "GM" or "CFD" for the Central Foundry Division, but they are not part of the block casting number. Also some of the later blocks have the size of the motor shown in liters. You may see a "5.0" (305) or "5.7" (350) cast on the rear ledge of a smallblock or a "7.4" on the side of a big block 454. On the side of some later blocks the last three digits of the block casting number are cast into the block, but these are difficult to see when the engine is in a vehicle. "


    A mirror and flashlight will probably be necessary.

    DVal
     
  4. 74X4Burb

    74X4Burb Member

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    Thanks, I guess I got a 350 not a 400,dangit anyway.Karl

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    Last edited: Mar 16, 2011
  5. BurbanDood

    BurbanDood Member

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    Check the emissions sticker on the air cleaner if its stock. It will tell you. Also run the VIN. If the engine hasnt been changed it will tell you. Email me the first 3 digits of the vin and ill tell you what it had originally. Mine is CCS which says its a chevy (C) (not gmc) 2wd(C) with a 454 (S).




    Proud owner of a 78 1/2 Ton 2wd Suburban with a 454 and an 89 1/2 Ton 4wd Suburban with a 350
     
  6. 74X4Burb

    74X4Burb Member

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    ckr are the first 3 digits and I already checked that.so it origanaly had a 400 but its been changed,the 350 in there now has been rebuilt recently, probaly only has 10,000 miles on it.thanks.Karl

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    Last edited: Mar 16, 2011

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