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Thread: 4.3 v6

  1. #1

    Default 4.3 v6

    So i know im probably late chiming in on this, but...
    for the first time in 15 years, GM FINALLY improved the 4.3 V6!
    from 1999-2013, it has always been 194 HP and 260 ft/lbs of torque, never changed in 14 years....

    so i finally noticed the new 2014 4.3 has an output of 285 HP and 305 ft/lbs of torque! wish my v6 had those numbers...
    2000 Chevrolet Silverado

    4.3L V6, 4L60E, 2WD, Single Cab
    Airaid CAI
    Poweraid TB Spacer
    Flowmaster 10-series exhaust (dumped)
    Edge CS insight monitor
    4.10 gears
    Limited-slip differential
    LS-1 Dual Electric fans
    Corvette tranny servo swap

    Head Unit: Alpine
    Speakers: Alpine SPR-60C 6.5" component set, 4X6 Infinity Kappas
    Subs: 2-12" Kicker CVT's
    Amps: Alpine-M1000 (subs), Alpine MRX-F65 (Speakers)

    305/70R16 NITTO Terra Grapplers
    16" PROCOMP 7089's
    2" leveling kit
    3" Fabtech Spindle Lift Kit
    Front/Rear-Bilstein 5100 shocks

    35W HID Low Beams
    RECON LED smoked roof cab lights
    HELLA LED taillights and 3rd brakelight
    HELLA FF-75 Aux. Reverse Lamps
    RIGID dually D2, flush mount, wide beam
    Hawk HPS Brake pads
    Russell braided steel brake lines
    Powerstop-red powdercoated brake calipers
    Powerslot Cryo brake rotors
    EGR in-channel window visors

  2. #2


    They had to do something to compete with the EcoBoost. Not really close to EcoBoost numbers but it does have more power than my 4.8L V-8.
    Clint (TX) 2001 Silverado LS 4.8L auto 2wd ECSB [GARAGE]
    Gasoline or gunpowder: If you ain't burning one, you ain't having fun!
    NRA Endowment Member 5 24 48 88 - Hendrick Motorsports FTW!

  3. #3


    Sounds impressive. I wonder what they changed/added/modified, etc. to get those numbers?

  4. #4


    Quote Originally Posted by goldie View Post
    Sounds impressive. I wonder what they changed/added/modified, etc. to get those numbers?
    From: News

    Like Sierra’s optional 5.3L and 6.2L EcoTec3 V-8 engines, the new V-6 features three state-of-the-art technologies – direct injection, active fuel management (cylinder deactivation) and continuously variable valve timing – that have been proven and perfected through 6 million hours of computational analysis by engineers studying the combustion process. In all, 10 million CPU hours were spent refining and making the most of the Sierra’s EcoTec3 engines.

    Although they share only a handful of parts with previous Sierra engines, the new EcoTec3 V-6 builds on experience gained from millions of trucks and billions of real-world customer miles resulting from a half-century of leadership in V-6 engine development.

    Sounds like an almost new engine to me

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  5. Thanks Goldie thanked for this post
  6. #5


    well its about freakin time!, i wonder why it took 14 years to update and engine... I guess GM's 4.3L V6 wasnt a top priority, i mean every year the V8's were getting more and more powerful, but they never did anything to the v6.

    also, if you look at the 2014 build and price option, the single/extended/and crew cab models all start out with the 4.3 v6 from the factory, you gotta build from there

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