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Thread: So its been decided that i dont have enough power in my truck

  1. #1
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    So its been decided that i dont have enough power in my truck

    i have the 6.0 with heads/cam supercharger @ 8 psi but the bottom end is all stock and i got used to it, I feel like i need more power.

    i was talking with Allen and he is gonna make me a 408 forged bottom end and swap out the heads and stuff i have now onto it. i have a 3.25" pulley which should get me around 12 to 15 psi at least. will it be a very noticeable gain in power?
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  2. #2
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    Will you still be able to get 12-15 psi with the 408? The need for more power is never ending...
    30' Ford Model A Tudor Sedan - Custom chassis - Big bore LS2 - twin B76's - Glide - 9" w/ 3.07 gears - 30" DR tire - 2k lbs cruiser

  3. #3
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    yeah with that size pulley i think thats what one guy was getting on pt.net same setup. he also ran a 3" pulley and was hitting 18 i believe, not sure exactly but it was definately up there.
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  4. #4
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    saratoga springs ,new york {upstate ,adirondacks }
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    youll notice the difference.put that pulley on.
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .

  5. #5
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    Yes--pulley down. Easiest way to make more power with an S/C and your supporting mods...

    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

  6. #6
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    so how much psi can a forged set up handle?
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  7. #7
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    Depends on how it is built. I would say upwards of 20+ psi...

    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

  8. #8
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    Quote Originally Posted by txarkitekt View Post
    Depends on how it is built. I would say upwards of 20+ psi...
    wow i dont even know if the SC could run that small of a pulley.
    if i can get to 18 max that should be more than enough, but i would be happy with 15.
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  9. #9
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    Yeah....
    15 psi will make you smile a little more.

    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

  10. #10
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    Feb 2007
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    im really excited about this, im gonna have to get some videos of it the way it is now taking off to compare it, because it is pretty darn fast right now.
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

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