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Thread: swap in 03 silverado

  1. #1
    Join Date
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    swap in 03 silverado

    Well I am about to pay off my truck so I am going to have some cash freed up, I am thinking about a 6.2 with 6l80e or even the 6l90e if I could, I tow a good bit so I would love the power and torque, what is your thoughts?
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  2. #2
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    sell your 03 and go buy a truck that already has that drivetrain idk seems like a cool project man go for it.
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  3. #3
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    or you could buy my built ls1
    2008 GMC Sierra SLE....370ci LY6 with some goodies SOLD
    1995 C2500- LS1 swap with a mp112
    build thread- http://www.ls1truck.com/forums/lsx-t...-ls1-swap.html

  4. #4
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    Good luck getting the 6l80e to work in the Gen III PCM.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
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  5. #5
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    No need to get it to work with the Gen3 PCM if you can get the wiring harness, tcm and pcm from the 6.2/6L setup and then wire it into the NBS fuse box. Sounds like my kind of challenge.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
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    Quote Originally Posted by RedHeartbeat View Post
    No need to get it to work with the Gen3 PCM if you can get the wiring harness, tcm and pcm from the 6.2/6L setup and then wire it into the NBS fuse box. Sounds like my kind of challenge.
    Greg when I get ready to do another project, I'll just send it to you for wiring!

    Just make sure you stay away from the belts. I like them to stay on the motor!

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  7. #7
    Join Date
    Nov 2008
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    Sounds like an interesting story lol, how much is the 6.2/6l and tcm and ecm going for?

  8. #8
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    Sep 2010
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    Quote Originally Posted by pl4yboy View Post
    Good luck getting the 6l80e to work in the Gen III PCM.
    Ya. I was told it would be more of a PITA than its worth.
    @J_Industries ON INSTGRAM

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  9. #9
    Join Date
    Nov 2008
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    Guess its just how bad u want to have it.

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