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Thread: Converting my 96 ecsb to 6.0 or 8.1

  1. #1
    Join Date
    Feb 2007
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    Sallisaw OK
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    2,194
    what would be the benefit on going to the larger engine? how possible is it to upgrade the 4x4 parts to make it them hold up to the power? that would be a built engine not just stock, possibly 500 hp?
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
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    Man, about the best suggestion I could come up with if you're going with that much HP would be to go to a 4L80e tranny and tranfer case from a 3/4 - 1 ton 4wd. The transfer case has larger parts on the inside. You could buy a late model 4x4 drivetrain and put the whole thing in there. You'll have to figure out the electronic shift for the xfer case.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Feb 2007
    Location
    Sallisaw OK
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    2,194
    <div class='quotetop'>QUOTE(RedHeartbeat &#064; Feb 18 2007, 11&#58;01 AM) [snapback]83699[/snapback]</div>
    Man, about the best suggestion I could come up with if you&#39;re going with that much HP would be to go to a 4L80e tranny and tranfer case from a 3/4 - 1 ton 4wd. The transfer case has larger parts on the inside. You could buy a late model 4x4 drivetrain and put the whole thing in there. You&#39;ll have to figure out the electronic shift for the xfer case.
    [/b]
    sounds good thanks, i definately cant have parts snapping on me so i really need to overbuild the driveline.
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  4. #4
    Join Date
    Feb 2007
    Posts
    18
    <div class='quotetop'>QUOTE(567234ta &#064; Feb 18 2007, 02&#58;53 PM) [snapback]83712[/snapback]</div>
    i definately cant have parts snapping on me so i really need to overbuild the driveline.
    [/b]
    4L80E/TH400
    &
    NP205

    Done.
    Rich in N.C. - Just building your average &#39;04 5.3L Vortec powered, 4-wheel steering, tubed, 4-linked, 42" tire shod, 2.5 ton military axle&#39;d &#39;73 Toyota Land Cruiser

    Looking for an ignition coil for my 5.3.. Got one?

  5. #5
    Join Date
    Nov 2003
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    Denton Texas
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    NP205 gear drive Tcase is indestructible, no doubt&#33;
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
    Join Date
    Feb 2007
    Location
    Sallisaw OK
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    well after reading the problems others have had with the 8.1 and just how few after market parts there are for it i am definately going 6.0

    when you say 4L80E/TH400 &NP205 Done. what about axels or any other weak points? and rear end?
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  7. #7
    Join Date
    Nov 2003
    Location
    Denton Texas
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    4150 u-joints and yokes will alleviate headaches in the driveshafts. put a good quality posi in the rear end and see if you can break it&#33; The 8.5/8.6" rear ends are very strong, stronger than most guys would believe. If you have the G80 installed, replace it with a real LSD/posi before it falls apart on you.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  8. #8
    Join Date
    Feb 2007
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    Sallisaw OK
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    2,194
    <div class='quotetop'>QUOTE(RedHeartbeat &#064; Feb 19 2007, 10&#58;30 AM) [snapback]83779[/snapback]</div>
    4150 u-joints and yokes will alleviate headaches in the driveshafts. put a good quality posi in the rear end and see if you can break it&#33; The 8.5/8.6" rear ends are very strong, stronger than most guys would believe. If you have the G80 installed, replace it with a real LSD/posi before it falls apart on you.
    [/b]
    is it possible to not lock the rear end fully yet still have it durable? i didnt want to have problems turning from one wheel scuffing along.
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  9. #9
    Join Date
    Aug 2005
    Location
    St. Anthony, Indiana
    Posts
    1,592
    Get you an Eaton posi or Auburn Tru-Trac and you will not have any problems. These will still allow the rear wheels to turn at different speeds when turning.

  10. #10
    Join Date
    Nov 2003
    Location
    Denton Texas
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    Yeah, you don&#39;t want to buy a spool rear end. I like the Auburn.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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