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This is a discussion on Mods within the GTO forums, part of the Vehicle Specific category; I am getting ready to do some upgrades and was looking for input on what i am thinking of doing... ...

  1. #1
    All Throttle repeter's Avatar
    Join Date
    May 2007
    Location
    Omaha,NE
    Posts
    49

    Phantomblack Metallic
    2005 GTO

    Mods

    I am getting ready to do some upgrades and was looking for input on what i am thinking of doing...

    I have an 05 Phantom Black Red Leather 18" Wheels and M6.

    Things already done:
    Stainless Works LT w/o Cats
    JBA Midpipe
    KNN CAI
    SLP Predator 455 tune
    Drag bags
    SLP rear sway
    Hurst Competition Plus Shifter
    Wrapped the intake tube with Header tape
    Added a heat sync to cool the MAF between rounds

    My best run is an 8.15 1/8th mile i am trying to get it in the mid 7's 1/8th mile I think i am High 7's on a cool day as i was 8.15 at 85 Degrees 50% humidity
    http://www.dragtimes.com/Pontiac-GTO...lip-13529.html

    Things i want to do:
    SLP L76/L92 swap
    1.8 Harland Sharp Roller rockers
    One piece aluminum drive shaft
    new SPEC clutch
    Lingenfelter Launch control

    Questions are is there a better bang for the buck out there?
    Are there offset roller rockers made yet for those heads?
    Is this too much head for the stock bottom and no cam?
    Is this kit still available? Is there a better head/intake combo for the money. Would it be best to get a cam kit, rockers, and a tune with a stock bottom. I do bracket race and drive it to the track and want to be able to drive it home.

    Any ideas wold be greatly appreciated...

  2. #2
    Senior Member qwkgto's Avatar
    Join Date
    Mar 2008
    Location
    OHIO"S only 9 second GTO
    Posts
    1,464

    Phantom Black Metalic
    2005 GTO

    Quote Originally Posted by repeter View Post
    I am getting ready to do some upgrades and was looking for input on what i am thinking of doing...

    I have an 05 Phantom Black Red Leather 18" Wheels and M6.

    Things already done:
    Stainless Works LT w/o Cats
    JBA Midpipe
    KNN CAI
    SLP Predator 455 tune
    Drag bags
    SLP rear sway
    Hurst Competition Plus Shifter
    Wrapped the intake tube with Header tape
    Added a heat sync to cool the MAF between rounds

    My best run is an 8.15 1/8th mile i am trying to get it in the mid 7's 1/8th mile I think i am High 7's on a cool day as i was 8.15 at 85 Degrees 50% humidity
    http://www.dragtimes.com/Pontiac-GTO...lip-13529.html

    Things i want to do:
    SLP L76/L92 swap
    1.8 Harland Sharp Roller rockers
    One piece aluminum drive shaft
    new SPEC clutch
    Lingenfelter Launch control

    Questions are is there a better bang for the buck out there?
    Are there offset roller rockers made yet for those heads?
    Is this too much head for the stock bottom and no cam?
    Is this kit still available? Is there a better head/intake combo for the money. Would it be best to get a cam kit, rockers, and a tune with a stock bottom. I do bracket race and drive it to the track and want to be able to drive it home.

    Any ideas wold be greatly appreciated...
    Hi,those heads are what I am going to run on my new 408 combo,I suggest just using the GM rockers,the aftermarket ones are very expensive and they really wont add much to the motor.You car is just like mine except mine is a A4,I have a turbo setup and im running really well,have ran the combo for two years on 13psi.your not going to hurt the stock bottom end.pm me if you have any questions.
    mods: custom built twins, built 408 w/l92 stock GM heads,GM matching intake,drag bags,frame ties,aluminum drive shaft, performabuilt 4l80e,Yank converter,ohios fastest and quickest 04-06 GTO 9.52 at 144mph. 1.50 60ft on stock rear end and shafts/suspension,on drag radials.

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