Block Identification Numbers
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Northstar Engines and System Technical Discussion Discussion, Block Identification Numbers in Cadillac Engine Technical Discussion; Hay guys, new to the board. Hoping somebody can help me out with a question. Looking at purchasing a Northstar ...
  1. #1
    Saywhen is offline Cadillac Owners Member
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    Block Identification Numbers

    Hay guys, new to the board.

    Hoping somebody can help me out with a question. Looking at purchasing a Northstar motor, but wasn't sure on how to decode the serial numbers. I'm particularly interested in what year the motor is before purchasing. I would image this is the best place for this kind of technical information, so any imput would be appriciated.


    Thanks,
    Jeff H.

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  3. #2
    Submariner409's Avatar
    Submariner409 is online now If it won't run, slap in a big stereo
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    Re: Block Identification Numbers

    Assume you are looking at a standard fore-and-aft engine, not FWD.

    On the front right side of the block, just below the front corner of the right cylinder head is a machined pad. The VIN derivative number, an abbreviation of the original vehicle's VIN, is stamped or etched into the pad. A GM dealer service writer can decipher it.

    Not sure what you want the Northstar for, or even if you're looking for a FWD or RWD setup There are both, and both are VERY different. The 2000+ 4.6L Northstars in the FWD series have roller cam followers, so that's the best of the FWD's.

  4. #3
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Re: Block Identification Numbers

    This is something Sub says. DID YOU USE THE SEARCH TAB!!!!!!!!!!!!!!!

  5. #4
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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  6. #5
    Submariner409's Avatar
    Submariner409 is online now If it won't run, slap in a big stereo
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    Re: Block Identification Numbers

    R U North or South now ?

  7. #6
    Saywhen is offline Cadillac Owners Member
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    Re: Block Identification Numbers

    Thanks for the help guys.

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