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  1. #1

    Default Performance Upgrade Input

    OK guys I have an 03 GMC Sierra 5.3 V8 Z71 and I have been looking at doing some Performance upgrades within the next year and would like some input on what you guys think would be good.

    I already have mind set on heads, cam, valve springs(rockers, rollers, lifters), long pipe headers, and a DiabLew tune package. What else would be good without doing a 6.0L swap?
    Jack It Up Fat Chicks Can't Jump-Kansas HickLyfe


    '03 GMC Sierra Z71 5.3- 4" Rough Country Lift Kit/33" Terra Grapplers/17" Helo Rims
    '08 Buell 1125R
    '11 Apollo Mini PitBike

  2. #2

    Default

    Cat-back exhaust and CAi if you haven't already done them.

  3. #3

    Default

    Injectors, stall converter, coil packs and coil wires, and I also throw in some tranny work cuz the 4l60e isn't made to be hammered on
    2009 chevy 1500 z71 4x4
    2.5 ccm level,2.5 inch rear blocks 305/60/18 coopers stt,Debadged,10 series flow w/dual exit in front or right rear tire, KN CAI, diablo InTune, 18% tint all the way around ,spec-d euro headlights with black housings,winjet smoke LED tail lights,putco LED third brake light smoked, fab fours front bumper with 10k warn winch, RK sports ram air hood
    1965 c10 swb, zz4 350 with the hot cam and fast burn heads and a 780 Holley on top, richmond super street 5 speed,restorod

  4. #4
    Sr. Mechanic ChevyHD's Avatar
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    Elberon, Iowa, United States
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    Default

    Does Lew tune your TCM as well?
    Adam
    2004.5 CCSB Duramax
    Max Effort Tuning by Idaho Rob - Goerend Transmission - PCV ReRoute - EGR Blocked - Plugged Resonator - 5" Diamond Eye Turbo Back - Tie Rod Sleeves - All On Mod - Edge Insight CTS - Recon Taillights, Cab Lights, & 3rd Brake Light

  5. #5

    Default

    Yea he can, maybe he'll jump in and give his insight

  6. #6
    Sr. Mechanic ChevyHD's Avatar
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    Default

    Alright, because with the mods he listed, and some tranny work, a good tranny tune would be very beneficial IMHO

  7. #7

    Default

    Just do a turbo kit on low boost. Best bang for the buck imo

    2006 Duramax LBZ
    Edge Evo
    4'' Diamond eye to 6'' tip
    16'' ion alloy, 33'' fierce attitudes
    Lots of work left to do!

  8. #8
    Sr. Mechanic ChevyHD's Avatar
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    Jan 2011
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    Elberon, Iowa, United States
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    Default

    Hell with it. Put a damn crate LML in it.

  9. #9

    Default

    Quote Originally Posted by ahmitchell1 View Post
    Injectors, stall converter, coil packs and coil wires, and I also throw in some tranny work cuz the 4l60e isn't made to be hammered on
    Yep I hate my 4L60e they need to put it in a go cart.......

  10. #10

    Default

    Quote Originally Posted by nakranij View Post
    Yep I hate my 4L60e they need to put it in a go cart.......

    If I keep my truck I know I will be doing a stage 3 or 4 kit on the tranny that way I know it can handle whatever I throw at it

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