Thread: how fast can a grand prix gt go without the speed limiter (top speed)

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  1. #1 how fast can a grand prix gt go without the speed limiter (top speed) 
    SE Level Member Zainoman's Avatar
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    anyone know? im curious to see if ive hit it.....
    All that work and all those mods mean nothing if your ride isnt clean
     

  2. #2 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GTX Level Member 02BlueGT's Avatar
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    my guess would be in the 135-145 range, but only a guess
    2002 GT...CAI, Headers, Special Eddition two-tone leather interior added, HUD added, 12" Brake Upgrade, ZZP strut tower bars, gmpp sway bars, poly motor mounts, -6an braided SS fuel hoses , Hptuned, Headers, Top Swaped, 50lb inj, E85, 3.4
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  3. #3 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GT Level Member scoobyydooooooo's Avatar
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    Had mine up to the max at 120,, but still went a tad faster
     

  4. #4 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    SE Level Member SDGrandPrixGT23's Avatar
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    I was goin 125 at one point on Interstate 5, on a recent trip back from LA I was goin over 145 through Camp Pendleton....depends how your car is set up.
     

  5. #5 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    I live here. UR LOSN's Avatar
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    in the GTP I was going 152...but it would still go mph...every mile or two....not much more after that when it was mainly stock.

    I have had my GT up to 119.....doesnt really have much more
    2001 GTP- PT76 turbo, Intense Drag cars old engine, Stage 4 Intense turbo cam,FMIC,150 wet,Double roller timing chain,Diamond forged coated pistons 8:0:1,Diamond piston rings,Cryoed L32 connecting rods,Cryoed crank,Clevite77 main bearings,Clevite77 cam bearings,Clevite77 L32 rod bearings,ARP Everything, Intense/meizere true billet Flexplate,Intense Wilson UIM/LIM,Intense oil pressure kit,Cometic,OE-R lifters,Cryoed L67 block,ATI turbo dampner,80# inject,Weldon 2035 fp,Aero Fuel Rails,AL cradle
     

  6. #6 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
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    144mph confirmed at the top of third for me... if the rev limiter was higher, it would've been higher, but I didn't want to shift into OD while going that fast. Only did it once though, as I really don't need to be hitting a tree, or much worse, another innocent driver.
     

  7. #7 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GXP Level Member ryangtp89's Avatar
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    iev only hit 130 in my gtp soo far with my new pcm in it.
    SLP headers, Wizaird cai, zzp1.0pcm ,slp powerflo catback, 3.4mps, NGK TR55's, 180*, zzp stage 1 hv tb,tb spacer, tb heatshield, Triple Edge Performance High performance Tranny, flipped motor mounts, spring blockers, prj 10.4mm wires, Sloted rotors & Ceramic brake pads,Alternator Voltage Booster. zzp 1.9 rockers & 105# springs
     

  8. #8 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    I live here. SyntheticShield's Avatar
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    I hit 134mph chasing down a WS6 Firebird (I caught that sucker too and nearly got around him but we came up on traffic). I dont know if it would have went faster or not, it was within a month of me getting the GTP and before I had started modding.
     

  9. #9 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GTP Level Member 2Fast4U's Avatar
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    A friend of ours has had his Grand Prix up to 155. We had our old Grand Prix up to 134, and my 442 I had her up to 130. The Cutlass has been up to 143 with a different motor in it.
    A.K.A. Trannyman's Wife
    www.tripleedgeperformance.com

     

  10. #10 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    I live here. SyntheticShield's Avatar
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    Quote Originally Posted by 2Fast4U View Post
    A friend of ours has had his Grand Prix up to 155. We had our old Grand Prix up to 134, and my 442 I had her up to 130. The Cutlass has been up to 143 with a different motor in it.
    Talk about a woman that moves fast, WOW!!!
     

  11. #11 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GTP Level Member 2Fast4U's Avatar
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    Quote Originally Posted by SyntheticShield View Post
    Talk about a woman that moves fast, WOW!!!
    That's right!!!! I love driving fast my nickname in High School was Speedy cuz I drove fast
    A.K.A. Trannyman's Wife
    www.tripleedgeperformance.com

     

  12. #12 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    SE Level Member GTP SE's Avatar
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    I was under the impression that the cars were gear limited to about 153ish.
    2001 GTP Special Edition
    |ZZP PCM|Headers|Ported LIM and blower|3.2 / 3.4 pulley|1.9's|MSD wires|Drilled 180* T stat|3" ZZP Catback l
     

  13. #13 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
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    I had mine going at 152mph on a nice straight away.

    It took a bit of time to get there once I hit 140mph she
    started to slow down, but kept climbin.
    Wiz, Wideband O2, 78mm T/B, P&P SC, SSIC, P&P LIM, 3", 1.8CCRR's, CC push rods, Custom covers, SLP headers, Meziere Water pump 3" Magnaflow, Race Tranny, 20" Concept One Wheels, Coilovers, BMR F&R suspension, Custom Body and Paint, Custom interior and sound.
     

  14. #14 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GrandPrix Junkie
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    just remember that if someone says they went 200mph in their gp they are lying, the vette had enough power, but not the aerodynamics to do it until recently
     

  15. #15 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    youtu.be/xhrBDcQq2DM FoSHO99's Avatar
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    I've never topped out my prix, to me it never seemed like that kind of car. My sho on the other hand made power up top and with the open intake and the secondaries opening up at 3400 rpm's it made it real fun. I think if I raced both of them together from 80mph+ the sho would win, but those kind of races get people killed and I'm not a fan.
    2001 GTP PT61 Turbo, E85, Stock Motor
    2011 Chevy Cruze MT6 1.4L Turbo
     

  16. #16 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    SE Level Member gonneville's Avatar
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    Quote Originally Posted by FoSHO99 View Post
    I've never topped out my prix, to me it never seemed like that kind of car. My sho on the other hand made power up top and with the open intake and the secondaries opening up at 3400 rpm's it made it real fun. I think if I raced both of them together from 80mph+ the sho would win, but those kind of races get people killed and I'm not a fan.
    The SHO probably would win on absolute top speed, I had my 90 base model up to 127 once, confirmed by a buddy in his M3.
    BTW, someone on BC did the math once, and I believe redline in OD would hit around 170 for 2.93s. Theoretically. Obviously drag would kill it long before then for a stocker...
    ~Brian-- 98 Park Avenue Ultra
    "Dude, you should get that noise looked at..."
    13.87 @ 101.40mph
    http://www.cardomain.com/ride/788093
     

  17. #17 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    I live here. UR LOSN's Avatar
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    Quote Originally Posted by archemedes View Post
    just remember that if someone says they went 200mph in their gp they are lying, the vette had enough power, but not the aerodynamics to do it until recently
    there was..........at the Bonneville salt flats......Intense's white bonneville
    2001 GTP- PT76 turbo, Intense Drag cars old engine, Stage 4 Intense turbo cam,FMIC,150 wet,Double roller timing chain,Diamond forged coated pistons 8:0:1,Diamond piston rings,Cryoed L32 connecting rods,Cryoed crank,Clevite77 main bearings,Clevite77 cam bearings,Clevite77 L32 rod bearings,ARP Everything, Intense/meizere true billet Flexplate,Intense Wilson UIM/LIM,Intense oil pressure kit,Cometic,OE-R lifters,Cryoed L67 block,ATI turbo dampner,80# inject,Weldon 2035 fp,Aero Fuel Rails,AL cradle
     

  18. #18 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GTP Level Member GTPluv's Avatar
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    My son asked how fast our GP would go one day. I slowed down at 120. Can't drive like that with the kids in the car! Unless we're runnin from the cops
     

  19. #19 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
    GT Level Member SD GTP's Avatar
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    I had my old GT up to about 120 once to see if the limiter was actually removed.
    MACGP President
    3.25"/P&P Gen III/ZZP Stg II TB/Thasher CAI/ZZP VS Cam/TOG Xtremes/AL 104s/180*/Full 3" Exhaust/SD Package/GMPP Sways & Arms/DuBob'd
     

  20. #20 Re: how fast can a grand prix gt go without the speed limiter (top speed) 
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    ? my 02 GP GT will get up to 82MPH thats the fastest I have had it so far thats fast enough for how much driving I do. its 12 miles to my furthest away job. I am down to just having 2 jobs the other job is 1.75miles away from my place. So I either put on 24miles or 3.5 miles every day. The 12 mile away job is all back roads not enough room to get up to a higher speed.
     

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