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04 ls1 to ls3

This is a discussion on 04 ls1 to ls3 within the GTO forums, part of the Vehicle Specific category; I need a part list for making an 04. Ls1 into an ls3.. I need exact list includng as much ...

  1. #1
    Member pmolina0436's Avatar
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    04 ls1 to ls3

    I need a part list for making an 04. Ls1 into an ls3..
    I need exact list includng as much detailed information as possible..example like the rockers..and sensors..down to gas lines etc...finally paid of my car and now time to upgrade her..thanks much appreciated..
    I hve the 6.0 iron already...

  2. #2
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    Someone will chime in on this one. I have seen two GTOs on eBay this summer with an LS3 conversion. But I didn't see anything about replacing the fuel lines or PCM swap. The descriptions on both were pretty vague. Wish I could help you out more.

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    Member pmolina0436's Avatar
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    Quote Originally Posted by cammed goat View Post
    Someone will chime in on this one. I have seen two GTOs on eBay this summer with an LS3 conversion. But I didn't see anything about replacing the fuel lines or PCM swap. The descriptions on both were pretty vague. Wish I could help you out more.
    Yea I've seen some also but just seen them list the basic...ls3 heads...ls3 intake...I think I've seen 2 diff. Intakes..not sure..and I've heard of "off set" rockers...and I think some sensors on the back are diff...I'm just trying to get as much info before I jump in :-)

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    Member SuperSSguy's Avatar
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    2002 Camaro SS M6

    Not trying to jack this thread but....will ls3 heads fit on an ls1 block?

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    Member pmolina0436's Avatar
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    Quote Originally Posted by SuperSSguy View Post
    Not trying to jack this thread but....will ls3 heads fit on an ls1 block?
    Not the 5.7...but will fit my 6.0 ls1 iron ...(lq9)

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