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  • gp 3400 swap

    I have a 2000 grand prix se (3100) I want to swap in a 3400 as the 3100 is starting to tick and consume oil, what would I have to do to make this swap possible? keep in mind I have the computer covered so i wont need a new pcm. I heard somewhere that all i would need to do is make longer wires to the starter. but this seems almost too easy.
    If it's worth doing, it's worth doing the right way.

  • #2
    you won't even have to do that. Its a direct drop-in, especially if you get a '00+ 3400. Even if there were any differences, just swap the parts from the 3100.
    Brian

    '95 Cutlass Supreme- "The Rig"
    3400 SFI V6, 4T60e
    Comp Cam grind, LS6 valve springs, OBD2 swap, Tuned
    2.5" DP/ 2.5" dual exh/ Magnaflow Cat/ crap mufflers/ 3500 Intake manifold/ 65mm TB
    TGP steering Rack/ 34mm Sway Bar/Vert STB/ KYB GR2's

    '08 Chevy Trailblazer SWB 1LT "Smart Package"- LH6 5.3L V8/4L60e, A4WD

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    • #3
      2000+, the 3100 and 3400 are identical, except the 3400 is a bigger bore and 10 more hp.

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      • #4
        thanks, that is a huge relief. the less work the better.
        If it's worth doing, it's worth doing the right way.

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