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Thread: 06 5.3 flex fuel, any issues in modding it?

  1. #1
    Join Date
    Dec 2007
    Location
    Texas
    Posts
    203

    06 5.3 flex fuel, any issues in modding it?

    im looking at purchasing a 2006 2wd crew cab with the 5.3 flex fuel (vin code z). ive heard they have bigger fuel pumps and injectors, but what issues if any are there with doing the following: cold air kit, long tube headers, off road y pipe, cat back exhaust, comp cam 212/218, 918 valve springs, 4.10 gears and 22 inch wheels. any hurdles i should know about?

  2. #2
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    The only reason why they have the bigger stuff is from the motor's ability to run E85 Ethanol. E85 requires bigger injectors... You shouldn't run into any issues... Just make sure you get a custom tune!

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  3. #3
    Join Date
    Dec 2007
    Location
    Texas
    Posts
    203
    thanks for the info guys, im going ahead with the purchase. be in touch soon....gene

  4. #4
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    Alright. Good luck with the purchase! Sorry to see the Z06 go... Let us know when you get the truck. Post up some pics!

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

  5. #5
    Join Date
    Sep 2006
    Location
    THE 405
    Posts
    1,332
    i have the same setup you're fixing to buy...07 classic flew fuel...300rwhp on a mustang dyno...20+mpg
    2007 RCSB|DTR81 built LSx 3xx|PRC|NX|BOGART|MSD|QUICKFUEL 950 E85|4L80|FTI Converters|Smith RaceCraft|Racepak
    midweststreetcars.com

  6. #6
    Join Date
    Aug 2006
    Location
    Wisconsin
    Posts
    882
    no problems here..
    brad - my fquick..

    curb feelers and fuzzy dice..

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