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Thread: Official NBS 4.3v6 to GEN 3 V8 swap Guide

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  1. #1
    Join Date
    Feb 2010
    Location
    North County San Diego
    Posts
    61
    Thanks for the info. I'm still shopping for a engine. A local guy has a 02 Tahoe with 87k and he wants 800 for the engine including wiring harness and comp. I'm not sure if I want to pull the trigger.

    If the Tahoe has a different transmission? Can I send the harness off the new engine to nelson tune for them to make the mods?

    Carnell
    Last edited by carnell; 09-22-2010 at 06:52 PM.

  2. #2
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    same 4L60 in the tahoe - you're good to go. just check to see if the hoe has traction control or not - yes=DBW, no=DBC
    and Nelson can do harness work (not that you'd need any - assuming the one they send is good). Current Performance Wiring did mine & i'm happy with it
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

  3. #3
    Join Date
    Feb 2010
    Location
    North County San Diego
    Posts
    61
    If the donor has traction control and my truck dosent, is that an issue?

  4. #4
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    traction control means it has the electronic throttle body, if i remember right. you'd need to work out the conversion to one or the other
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

  5. #5
    Join Date
    Feb 2010
    Location
    North County San Diego
    Posts
    61
    Ok, I'm not sure I know the differance between the two throttle bodys but I'll ask and make the changes if I need too.

    I'm calling the wrecking yard tomorrow to tell them to start pulling the motor. I'll start a thread when I get it. it will be a month before I start putting it in. I still need to get engine mounts and all the other small stuff.

    Thanks guys for your help. I really appreciate it

    Carnell

  6. #6
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    In dallas they hook to the PCM, make sure its the same year or newer pcm/tune, check for functionality, error codes and verify driveability checks. Next, they may put you on the rollers and install a tailpipe sniffer and check emissions. Be sure you have the cats installed for the visibility section of the inspection.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  7. #7
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    haha. makes me feel better about TN emissions.
    they just plug it up, look underneath to see if it "looks like" you have cats, & check the gas cap seal. i was actually talking to the guy about my engine swap this year
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

  8. #8
    Join Date
    Oct 2010
    Location
    Alvin, Texas
    Posts
    2
    Thanks for the info guys. I also sent a email to a guy I know through my job who works at a local shop and does inspections. He said the same thing, that as long as I don't have any check engine light and keep the emissions in place then it shouldn't be a problem. I miss the old days when you payed 12.50 for a basic inspection. I had a 83 Silverado with a gutted cat and nothing else and it passed every year no problem. At least Texas isn't as bad as California.

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