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  1. 02-27-2016, 09:08 AM #1
    blake864
    blake864 is offline
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    Feb 2016
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    Greenville SC
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    Blue
    04 silverado Z71

    5.3 or 6.0 build advice

    Hey everybody, ive got a 4x4 99.5 silverado im building for occasional off road and fast too. Ive did alot of work on vehicles and enjoy it but building a motor is something ive never done but ive wanted to and nows my chance, my goal is to be around 450-500hp, I can buy a 5.3 under $1000 but im wondering if id have alot more in it than a 6.0 to reach my hp goal and things i need to do to get there, ive looked into diy turbo setups too (the fab parts isnt a problem) so im curious on opinions to that route too.
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  2. 02-27-2016, 01:05 PM #2
    SMWS6TA
    SMWS6TA is offline
    Spaz is My Mentor SMWS6TA's Avatar
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    Feb 2009
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    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    5.3 or 6.0 build advice

    Go for 6.0 liter block.

    Much more potential.

    Plus if later you can bore out make 403 or 408. Can use LS3 heads.

    <<<<as a 6.0L block that is a 403ci.
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403ci , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, SPEC Stg3+ Clutch, QT SFI BH, MWC DSL, Full UMI Performance Suspension, Belstein Shocks, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/Wavetrac Diff 3.73 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    00 FB Vert - Stock

    78 FB - Just getting started......

    Horsepower never lies, but is often lied about!
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  3. 03-07-2016, 05:21 AM #3
    ICRAZY6
    ICRAZY6 is offline
    Car Nut ICRAZY6's Avatar
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    Feb 2006
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    Lacon, Illinois
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    Black
    2002 Trans Am WS6

    Here in IL the 5.3l are plentiful compared to the 6L. Both will take a ton of boost with very minimal aftermarket parts. Many of the guys build the 5.3l or even 4.8l around here because if it blows they can have another one the next day. It's really about how much you want to spend and how fast you want to go.

    2002 Black WS6 A4.
    FI, H/C, LT headers, full exhaust, Fast 90/90. MWC Fab 9". Subframe connectors,
    Lower Control Arms, Panhard bar, Torque arm Strano Springs & Sway Bars.
    Koni Yellows. FLT Stage VII trans w/ PAS3400
    ASC# 4619 Conversion date was Dec 3, 2001
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