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Anyone have a means of checking a casting # v/s application?

Discussion in 'The Garage' started by uglychevyZZ4, Sep 17, 2002.

  1. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Anyone have a means of checking a casting # and what it goes on, etc...? I wanna know if my jimmy's engine is the original or whats the scoop for ordering rebuild parts. I also wanna check the heads. lemmie know and ill get them for you if you have this means.
     
  2. Sandman

    Sandman 3/4 ton status Author

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    I dont think the casting # will tell. You need to look at the number on the block behind the alternator. The casting number will put you in the ballpark along with the head casting numbers. Post them and I'll look them up for you.
    Somebody here has a book that decodes the numbers behind the alternator. They will tell you exactly what it was for.
     
  3. gtkustoms

    gtkustoms 1/2 ton status

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    let me know what you got and i will tell you what you have for an engine and heads and if they are in the correct year for your truck

    thanks
    travis
     
  4. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    77 jimmy
    head #'s are 3998991 ( also says GM71)
    im lookin for the block numbers now, brb and BTW your link dosent work /forums/images/icons/wink.gif
     
  5. Sandman

    Sandman 3/4 ton status Author

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    heads #3998991....72-73...307/350......75cc chambers
     
  6. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    Cool, maybe i'll use my humpy's instead when i rebuild it /forums/images/icons/wink.gif engine # comin up.
     
  7. Sandman

    Sandman 3/4 ton status Author

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    I'm logging off.. try this link:

    mortec

    Good luck
     
  8. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    WOW that link is the ShiZ-Nit!! /forums/images/icons/shocked.gif it has everything!
     
  9. chulisohombre

    chulisohombre 1/2 ton status

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    that is a pretty cool site.thanx
     

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