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

  1. #241
    Join Date
    Mar 2010
    Location
    houston,texas
    Posts
    108
    I have a 2006 4.8 will my fuel lines work with the 6.0 and Is the motor mounts the same etc
    2006 silverado crew cab z71 6.0
    Nelson Tuned
    LT
    285/75/17 bfg mud terrain km/2
    TSP 220

  2. #242
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    Quote Originally Posted by silverado120 View Post
    I have a 2006 4.8 will my fuel lines work with the 6.0 and Is the motor mounts the same etc
    everything is the same...just swap in the engine and get a tune
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  3. #243
    Join Date
    Mar 2010
    Location
    houston,texas
    Posts
    108
    ok and is the 2006 6.0 a cluth driven fan or do they have electric fans
    2006 silverado crew cab z71 6.0
    Nelson Tuned
    LT
    285/75/17 bfg mud terrain km/2
    TSP 220

  4. #244
    Join Date
    Feb 2009
    Location
    Wichita Falls, TX
    Posts
    405
    Electric fans...
    Alex

    02 Chevy RCSB V6 -> H/C 5.3L SOLD

    03 GMC RCSB 5.3L CAI,Tune,3/6 drop

  5. #245
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    2006 van has a manual fan, 2008, also.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #246
    Join Date
    Mar 2010
    Location
    houston,texas
    Posts
    108
    ok cause this salvage yard im getting my engine from tried to give me one that had a clutch driven fan on it..i said dont they have electric fans and then he was like o we must have brough the wrong engine. ya bs he was just trying to rip me off. and do i need to swap my flywheel
    2006 silverado crew cab z71 6.0
    Nelson Tuned
    LT
    285/75/17 bfg mud terrain km/2
    TSP 220

  7. #247
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    Quote Originally Posted by silverado120 View Post
    ok cause this salvage yard im getting my engine from tried to give me one that had a clutch driven fan on it..i said dont they have electric fans and then he was like o we must have brough the wrong engine. ya bs he was just trying to rip me off. and do i need to swap my flywheel
    judging by your sig, i'd say you figured it out, but for noobs reading...
    yes, you'll need to swap to a 4L60 flexplate
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

  8. #248
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    FWIW, the van engines still have a waterpump driven fan all the way up in 2008 and further i am sure. I know for a fact the 2008 model van has the WP driven fan.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  9. #249
    Join Date
    Aug 2007
    Location
    Honeywood, Ontario
    Posts
    6,994
    2500's still have mechanical fans too
    2006 Silverado
    Little Black Bitch

  10. #250
    Join Date
    Feb 2010
    Location
    North County San Diego
    Posts
    61
    Wow some good info here!!

    I have a 2001 1500 4.3 auto 134k miles.

    The engine is getting tired and I flat tow my CJ7 and I would like a bit more power on the hills.

    Just a short recap: 4.3 to a 2001-2006 5.3 swap

    I can keep the transmission (Just got rebuilt a few months ago)?

    My 4.3 PCM reflashed for the 5.3? Better if I can get the ORG PCM for the 5.3 being purchased?

    I can use the org engine mounts?

    New fan shroud

    New hard fuel lines? (frame to engine)

    Keep org alternator?

    Missing anything?

    Thanks,

    Carnell

    p.s I found a 5.3 (with pcm) for $675 out of a 2001 Tahoe. Not sure how many miles but I have time to do a mild rebuild if needed.
    I can't spend anymore then 1k for a engine. Is that reasonable?

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