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Thread: Top speed

  1. #1

    Default Top speed

    Would like to know what is the top speed some of you guys have had your truck to.
    05 Sierra Z71 5.3l
    w/ super chip 130mph

  2. #2

    Enkeiavalanche's Avatar
    Join Date
    Apr 2010
    Piermont,NY, back in Northern NJ now, But may be in IL soon....


    I hope you have better brakes and sway bars on that truck....
    08 Z71 Avalanche Mods to date: K&N CAI,Hellwig Swaybars and End Links, Corsa Sport Exhaust, Superchips Programer,IPCW LOF & 3rd brake light and tails, AMI Gas door,Show Hooks and Door locks, Enkei Wheels, with Pirelli tires, StreetScene Bowties, Grant Steering wheel,Muth signal mirrors,SSBC Big Brake kit,Huskyliner Mug gards,Floor mats and Hood shield, McGard Lug nuts and locks, Bedrug, Cervini's Ram Air hood,35watt HID Fog lights, Sylvania bulbs all around ZXE's Highs and Lows, WhiteNight Back up lights,Sirius and HD Radio, SnugTop sitting on deck now Got a Softopper on now,Tempress Boat Hatches.... New Bilstein shocks are on... New Mods coming soon..... X

  3. #3
    stephan's Avatar
    Join Date
    Sep 2010
    Far West, Oregon USA,
    Blog Entries


    I'm afraid to say because some of the guys on here will flog me with an old Ford v-belt, but it was higher than your 130mph ha ha ha

    My speedo was wound around & back past the dead space & pinned on the peg & couldn't get past zero again (that occured @ 5700 rpms & it redlined @ 7100 rpms') so I had to compute the actual mph from RPMs' x gear ratio x tire diameter when I got home.

    edit** Did you do the 130 with those tires you have on in the photo?
    Last edited by stephan; 10-31-2010 at 09:23 PM.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol

  4. #4
    Master Mechanic
    KyleZ71's Avatar
    Join Date
    Jun 2010
    York and Wilkes Barre, PA


    130mph in my 03 silverado. Surprised the A/T's could handle it

  5. #5


    i pushed about 130-135 when i ran a 94 mustang gt... but then again i have my truck setup more than most to have less float when running that fast on the hwy...
    2000 single cab short bed 1500 w/ 6.0 vortec maxx swap from a 2006 2500, custom intake, slotted brakes, shorty headers, 8mm wires, electric fan, strait piped, 4.5 inch lift, asp pulleys, true dual through body exhaust, built trans w/ shift kit, custom tune ... 320rwhp

  6. #6


    Was running different tires. Clocked mine with GPS. Ilive in the mountains of TN not a lot of flat places here to let it fully wind out.

  7. #7


    I clocked myself at 127 mph with a GPS in my '02
    2002 Chevy 1500 Ex-cab Z71: 5.3L, auto 4, shorties, hi-flow cats, true dual 2.5" straight pipes, AirAid intake, TBS, Platinum plugs, 8.5mm wires, programmer, 3in w/ 33s, also has the composite bed

    2010 GMC 1500 Crew Cab Z71 w/ All Terrain package: 5.3L, auto 6, 2" Zone leveling kit, AirAid Jr. Intake Kit

  8. #8
    Master Mechanic
    KyleZ71's Avatar
    Join Date
    Jun 2010
    York and Wilkes Barre, PA


    Good times. =)

  9. #9


    Hell, (less) top speed is one of the main reasons I got my truck!

    My last car (Chrysler 300 SRT8) was a beast- Ran out of nerve before I ran out of car at 160 and it was still pulling like a tractor. Rock solid at speed and handled great, but needed something more practical and that wouldn't get me in nearly as much trouble. Hence the trade for the Silverado...

    With that said, I'm guessing they are ECM limited somewhere around 115 from the factory?


    2010 Silverado Extended Cab 4X4 LTZ w/Z71
    2008 Tahoe 4X4 LT w/Z71
    1987 R10 Silverado 2wd short-bed (Wonder-Truck!)

    The only mustang in our house.... A NAVY MUSTANG!

  10. #10


    110 mph .. as fast as the tires were rated to go,didnt want to take chances.

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