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  1. #1

    Default Upgrade a blazer 4.3l v6 vortec: Supercharger kit or turbo kit?

    Im from Brazil.

    My car is a Chevrolet Blazer 2002 with Vortec 4.3L V6. Chevrolet sold some blazers here with just some adaptations in the exterior and with this 4.3L engine made by Vortec. The engine is the same of your in USA or Canada. But I dont know why, they have reduced a lot the power of it here. Maybe the brazilian legislation or other rules forced Chevrolet to change some settings of this engine. The result is a Vortec 4.3L V6 with just 192 HP.

    Ive been searching all over the internet, in some brazilian forums and others places, for informations about upgrading this engine and making it just like in USA, with Supercharger or TwinTurbo, what would be better. I heard about Syclone and Typhoon, which came originally with this same engine but a lot more powerfull. I saw some people saying that this 4.3L Vortec is very huge and can run more than 300HP. It is a shame to have this engine in my car with just 192HP.

    I am able to import some parts from USA and ask my mechanic here to install and adjust everything.

    I need some help to know what is the best solution for my truck, if it is the supercharger or the turbo kit, and what kit do i have to buy. My intention is not to build a tremendous machine and take the risk to have a lot of maintenance and breakups. The idea is to have a more powerful car but also safe and durable.

    See bellow attached some pictures of my car and specially the engine.

    Thanks a lot for your help.



  2. #2


    Very nice truck, welcome to the site.

    The Canadian and US trucks do not have superchargers, or turbochargers, just V6 engines with throttle bodies.

    You may have some tougher clean air laws that lower the hp; but, I am going to suggest the engines are the same and that the South American way of determining the hp may be different.

    Edit: I just checked the US GMC 2013 Sierra 4.3 V6 specs. For 2013, GM is rating the 4.3 as 195 hp in the US. Your truck is rated the same as the US trucks.

    Perhaps I have misunderstood your question.

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

  3. #3


    Welcome to the club!

    If you really want to spend the money for a kit (Over $3,000USD) they do make them.

    1996 Chevy Tahoe LT 5.7L V8 4X4 205,000+ miles. Built proudly at Janesville Assembly in Janesville, Wisconsin
    Basic mods: Lights all over, bunch of electrical work, and a couple cooling mods.

    Check out my other mods in My Garage:

  4. #4


    a turbo at a low boost setting would work and be cheap (relativly).

    200 horse for a v6 isnt really bad. the 4.3 isnt a real powerhouse, but it makes decent power, is very reliable, and has alot of torque for its size.


    2011 GMC Sierra SLE 5.3 Z71 4X4 Stealth Gray Metallic / 2004 Chevy Impala LS 3.8 Cappuccino

    Tow mirrors - Diablew Tuned - Flowmaster Regular 40 - Ready Lift 2.5' lift - BFG LT A/T K/Os - Carr Light Wing - TruckLite LED lights - Optima Red Top - 50% Front Window Tint - Line-X bedliner - Airaid MIT - Tekonsha P2 - ARS Billet Grill - Fia custom fit seat covers

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