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  1. #1

    Default Extra power out of a 5.3?

    Are there any other little things I can do to gain some performance? I have a cai, catback and will be getting it tuned. I know people swap corvette intakes on their ls1 camaro's to gain some power. Are there any swaps like that, we can do?

    Thanks, Matt.
    1973 Chevy Nova Drag Car 10.34 @ 128-Still not fast enough!
    2008 Chevy Silverado LT Z71-Sold
    2006 Chevy Trailblazer LT-Sold

  2. #2
    TRPLXL2's Avatar
    Join Date
    Jan 2009
    Norwalk, Ohio
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    Trick Flow and Weiland make intake manifolds for the 5.3, but they are anything but cheap. They will get you about 15hp max, and they only weigh like 5 pounds.
    2004 Chevy Colorado
    LS1 5.7 swap/TBSS rear axle swap

  3. #3

    Cool Extra power out of a 5.3?

    The LS1 car type manifolds will work on your truck, but you will have to change your acceseries drive mounts as they are to tall for the shorter car manifold to clear. Also the car manifold makes power in the higher rpm range. The stock truck manifold makes more bottom end torque. One of the magazines ( I dont remember which magazine) did a comparison between the truck and car manifolds and they concluded it was to much work for the few hp gains. Also unless you make a cam change and head work or both you really dont need a maniflod change. If your looking for more acceleration I make a rear end gear change.

  4. #4


    There's a lot that you can do to gain a few HP here and there. E-fans, underdrive pullies, injectors, headers. Try checking out or lmctrucks for some ideas. Just make sure you tune to compensate for a lot of these upgrades.

    The fool learns not from the wise man, but the wise man from the fool.

    2004 Silverado 4x4 (Suzie)
    6" Fabtech Suspension Lift
    35" NITTO Terra Grapplers
    18" MB Wheels Predators
    Thrush Turbo Series Mufflers
    on true dual exhaust
    Grille by Option Racing

    1952 3600
    Finally getting torn down to the frame.

  5. #5
    Legend 2ToNe04's Avatar
    Join Date
    Apr 2009
    Fresno California
    Blog Entries


    Long tube headers
    bigger injectors
    efans or ls1 fans to cool everything down

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