Thread: Stock Tranny????

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  1. #1 Stock Tranny???? 
    SE Level Member GINOSGTP's Avatar
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    HEy ...Just wondering how much horsepower the tranny in my 2002 GTP will take before i need to make modifications to it?
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  2. #2 Re: Stock Tranny???? 
    Donating Users BADAZGTP's Avatar
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    Anything over your basic mods. When you start getting into cams and under a 3.4 pulley, you should want to upgrade.
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  3. #3 Re: Stock Tranny???? 
    I live here. SyntheticShield's Avatar
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    Moved to the correct area.
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  4. #4 Re: Stock Tranny???? 
    Transmission Expert Trannyman95's Avatar
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    This is really a loaded question but as mentioned above the trans really should be upgraded after the basic mods are done to the car. Sure there are guys running into the 12s on a stock trans BUT it is not without concern or caution. The stock transmissions have their weaknesses and shift firmness is a big killer. Most aftermarket pcms raise the shift pressure a bit for firmer shifts to help the trans out with higher power levels and this typically gets you by for a while. Once you get into the low 13/high 12 second range is when things start to be on the verge of failing or breaking. I mention this being a loaded question because there are guys running low 14s that are trashing stock transmissions, so there are a lot more variables than just mods and some transmissions just dont last.
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  5. #5 Re: Stock Tranny???? 
    Donating Users BADAZGTP's Avatar
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    I am glad you chimmed in on this Trannyman to go more in depth. If it was me and knew I was going to do some nice modding, I'd go ahead and do a tranny upgrade. Better to be safe than sorry.
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  6. #6 Re: Stock Tranny???? 
    club of used to own a gp 99prixgt's Avatar
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    just wait until the stock one explodes, than get a built one
    16' wrx sti- stock
    06 Spice Red GTO- m6/exhaust/tune/suspension/377whp-383tq-sold
    99 silvermist gp gt-g5/xp/IC/3.0mps-parted&sold
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  7. #7 Re: Stock Tranny???? 
    SE Level Member GINOSGTP's Avatar
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    thanks for alll the advise....if i were to upgrade the tranny what should be done first?
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  8. #8 Re: Stock Tranny???? 
    I live here. GTPJOE90's Avatar
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    talk to trannyman he will hook you up fat i hear haha
    hogan 3inch DP u bend delete ,180*tstat, autolite 104s, LED interior, 4" FWI, 2000watt system, bullitt rims, zzp pistons, pems, alt rewire, thrush muffs, 3.4 zzp mps, transgo shift kit, triple edge performance trans. autometer triple pod :SOON: urlosn HPT PCM tune, HEADERS, 1.9's
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  9. #9 Re: Stock Tranny???? 
    Donating Users BADAZGTP's Avatar
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    You are correct sir. Took the words right out of my mouth. From what I have seen, Trannyman has the best prices and does a hell of a job.
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  10. #10 Re: Stock Tranny???? 
    GrandPrix Junkie Sabrewings's Avatar
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    Quote Originally Posted by 99prixgt View Post
    just wait until the stock one explodes, than get a built one




    Best way to go. This way you can show us the carnage pics after you get the new one installed.
    2004 Impala LS - got some mods sold!!!
    2009 Subaru Impreza WRX STI

    NAIOA moderator Still Imp'n, just in a different Imp.
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