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Thread: 1992 4X4 Blazer Build

  1. #1
    Join Date
    Aug 2011
    Location
    Galveston, Texas
    Posts
    225

    1992 4X4 Blazer Build

    So this is my build thread. Ill be starting the swap tomorrow...
    Its a 1992 K1500 Blazer. Stock 350 TBI with almost 250000 miles on it and the 700r4
    It will be getting a LS 5.3 from a 2005 Avalanche and a shiny new 4l60e Nelson performance tune and custom harness
    Ill keep it updated and answer any questions I can feel free to comment



    Old hauling new



    This is what's there now.



    This is the new life



    Cleanin her up

    Feeding her right

    Drive by cable conversion from DBW with a shiny new ported throttle body!
    More pics tomorrow! Starting to demolish

  2. #2
    Join Date
    Mar 2011
    Location
    Amarillo TX
    Posts
    200
    Good luck, I've always liked the 2 door full size blazers like yours.
    gonna be awesome when its done
    2000 ECSB 5.3L with K&N CAI, true duals with flowmaster 40s, and 200k miles!

  3. #3
    Join Date
    Aug 2011
    Location
    Galveston, Texas
    Posts
    225
    Thanks ill need the luck!!

  4. #4
    Join Date
    Aug 2011
    Location
    Galveston, Texas
    Posts
    225
    Stated ripping today. Made pretty good progress!







    Have most of the old wiring harness laying on the floor now. My question is where do I begin to edit it? I still need it to control headlights and AC, ABS, 4x4, and whatever else I missed.
    So do I just start chopping what I don't need off by the ecm? or is there a different way of doing this? do I even have to use the old ecm for anything?
    Im gonna dive through the service manual tonight and see what I can find out. Don't know when ill start modifying the harness. But anywho..
    Comments answers recommendations?

  5. #5
    Join Date
    Dec 2004
    Location
    San Antonio, TX Area
    Posts
    1,757
    You do not need the old ecm for anything. The new PCM just needs power, it controls the trans and engine. The gauges read from the sensors on the engine.
    "ALisSa1 Silverado"
    1990 Chevrolet RCSB 2002 Chevrolet Camaro LS1/4L60E
    Scrimpin Ain't Easy
    ( . Y . )


  6. #6
    Join Date
    Aug 2011
    Location
    Galveston, Texas
    Posts
    225
    Quote Originally Posted by Chevy-Art View Post
    You do not need the old ecm for anything. The new PCM just needs power, it controls the trans and engine. The gauges read from the sensors on the engine.
    So the air conditioning is all separate from the ECM?? What about abs?

  7. #7
    Join Date
    Aug 2011
    Location
    Galveston, Texas
    Posts
    225
    Got my engine out yesterday. Now jsut waiting for some more parts to arrive and trying to clean out engine bay. 20 years of tar and grease anyone got a miracle way to get it out?


    Last edited by Minime168; 10-26-2011 at 10:39 PM.

  8. #8
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    pay someone with a steam cleaner to come over and wash it for you, worth the money. Be sure to spray paint all bare metal when done before it starts to rust, the cleanup job with remove the factory parafin protectant on the steel. POR15 works great to preserve the metal.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  9. #9
    Join Date
    Aug 2011
    Location
    Galveston, Texas
    Posts
    225
    I'll look into that. Thanks bud!

  10. #10
    Join Date
    Aug 2011
    Location
    Galveston, Texas
    Posts
    225
    Harness comes in tomorrow! Thanks nelsons!

    Still worried the 4x4 isn't going to work out since the transmission is from a 2wd avalanche. :/ anyone got a fix or suggestion in getting the new 2wd tp mate to the old NP241 t case?

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