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  1. #1

    Default 4.3l v6, how to get more horsepower and mpg

    I just bought a 2005 Silverado 40k miles. It has a 4.3l v6 though, what can I do to give that motor a little more power and maybe help with mpg? Cold Air intake, supercharge?

  2. #2

    Default

    Quote Originally Posted by wgstout View Post
    I just bought a 2005 Silverado 40k miles. It has a 4.3l v6 though, what can I do to give that motor a little more power and maybe help with mpg? Cold Air intake, supercharge?
    What kind of body style do you have? Extended cab? Regular cab? Long bed? Short bed?

    I have the regular cab, shortbed and I recently averaged 25.5 mpg on the highway going between 60-65mph.

    Cold air intake by K&N is something that I am strongly considering. I have heard good things about it.

  3. #3

    Default

    25 mpg I have a 03 silverado with the 4.3 and it gets horrible fuel mileage. To get the power out of the v6 you have to put a cai, tune, exhaust, AND put a bottle of meth in it. All of this for less than 2 grand. A custom tune would make wonders on the power for you. Talk to jesse at wait4meperformance call him and talk to him his website is not finished yet but you can get the phone number off of it. GOOD LUCK
    08 silverado
    4.8
    K&N cai
    single in dual out cherry bomb pro
    leveling kit
    custom painted bow ties
    Bed liner
    Tinted windows
    20inch Cruser Alloy Switchblades
    Goodyear Eagle GT2 285/50/20
    1 truly heavy foot + Wait4meperformance SCT Handheld
    100 shot of Nitrous Dyno tune system
    SS front bumper
    Matching painted front grill and bow ties

  4. #4
    Jr. Mechanic
    Join Date
    Oct 2009
    Location
    Fairbanks, Alaska
    Posts
    76

    Default

    Hi, I would say to maximize your fuel
    1. Lighter Foot ( Obvious I know, but It's true works for me )
    2. Intake definitely. Make sure you stay out of water with the K and N
    3. Cat back maybe? Doesn't do a whole lot, maybe 1-2 mpg at best. It will sound good though.
    4. Make sure you aren't carrying anything that isn't necessary in your truck. Example: I used to carry a Snow Machine around with me all the time, not only when I used it.
    5. Tires inflated properly.
    6. Computer Programmer, will work well, my friend has an s10 V6.

    That's about it.
    Best of Luck to You.

    2006 Silverado Crew Cab 5.3l Z71 4WD

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