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3100 or 3400 intake

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  • 3100 or 3400 intake

    How can I tell which intake I have and the year it is from? I bought the engine complete with FI and wiring harnesses, I was told that it was a 3100 out of a '99 lumina but the UIM says 3400 on it. How can I tell what the LIM is? I will get some pics of it. Any help will be appreciated.
    White '89 Beretta GTU with a 3400 under the hood. only a tranzgenic CAI so far!

  • #2
    Well, it will either be a 3400 lower or a 00+ 3100 lower. But they are the same, so its a mute point. The 3400 upper won't bolt to an old style lower, so that rules that out.
    -Brad-
    89 Mustang : Future 60V6 Power
    sigpic
    Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

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    • #3
      also, the LIM has the last two digits of the year cast into it, if it says '99+ it's the same for both the 3100 and the 3400
      N-body enthusiast:
      {'87 Grand Am SE - 3.0 90* v6} / {'93 Grand Am LE - 3.3 90* v6}
      {'98 Grand Am SE - 2.4 Q4} / {'99 Grand Am GT1 - 3400 60* v6}

      Current Project:
      {'90 Chevrolet C1500 Sport 350TBI}

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      • #4
        thanks for the info, it has 00 cast into the LIM on opposite corners so it is the same.
        White '89 Beretta GTU with a 3400 under the hood. only a tranzgenic CAI so far!

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