Thread: 03 LE GT.... GTP motor swap ???? need opinions.

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  1. #1 03 LE GT.... GTP motor swap ???? need opinions. 
    GT Level Member kking89's Avatar
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    Soo my dad found this set of reall nice 18 inch 350z wheels with tires . NISSAN 350Z 18" 2005 2006 2007 2008 2009 OEM RIMS WHEELS SET 62455-62456 on eBay! , this is just a link of the wheels and what they look like but not the ones im buying. Hopefully they fit, they have the same size Bolt Pattern as my bullits and they arnt as wide but they are staggered, 8 and 8.5. hopefully they fit. My plan is to sell my Bullits, then use my Tax return money thats coming in soon; around 400-500 bucks. I would like to get a GTP motor, what do u guys think/expect? i was thinking of getting a Junkyard motor, and tearing it down at home and painting and clean allot of the pieces up at my Tech school (for free ) and hopefully have it in by the summer starts when i put my wheels on.... to slushy outside for nice wheels to be put on. Maybe get a poll going on peoples opinions ?
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  2. #2 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
    I live here. MoarkatsINmuhtrailer's Avatar
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    do it. itd keep you busy.
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  3. #3 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    just topswap it.. better compression..
    CTRACER: YOU SHUT YOUR MOUTH WHEN YOUR TALKING TO ME
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  4. #4 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    easier to swap an l67 though. gonna have to perfect the topswap tune else itll be bad
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  5. #5 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
    GTX Level Member GTPSHAWTY's Avatar
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    and while its broken down mod up the internals a lil bit...
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  6. #6 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    yea true... well i was thinkin on the moddin level.. he can beef it up while its down.. and paint parts before installing them..
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  7. #7 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    Quote Originally Posted by GTPSHAWTY View Post
    yea true... well i was thinkin on the moddin level.. he can beef it up while its down.. and paint parts before installing them..
    exactly, come on i get to paint and clean my engine for free! i gotta take that advantage.
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  8. #8 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    Well my L36 motor is fine right now nothing wrong with it (165k miles), im just coming into some money and finally wanna get a GTP , but i love my LE because its the only one around my town. So i think getting the motor and swapping it would be easier. Do you guys think those wheels would fit/look nice? also what kind of motor condition would u expect from me spending 400 bucks
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  9. #9 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    as far as the rims they should look nice.. i was lookin at saleen or audi a4 rims for myself..
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  10. #10 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    or keep your trans, and upgrade all the internals. 03 is tricky though, trannys have different parts, electrical and mechanical
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  11. #11 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    you could find gold in the junkyard.. sometimes thats the case.. but be sure to grab the trans too
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  12. #12 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    theyd look nice. check what offset they are. just go get one from a junkyard, tear it down, definitely have it hot tanked and sonic tested. check the crank for scoring and all the good stuff.
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  13. #13 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    Quote Originally Posted by 99pgpgt View Post
    theyd look nice. check what offset they are. just go get one from a junkyard, tear it down, definitely have it hot tanked and sonic tested. check the crank for scoring and all the good stuff.
    what kinda offsets can GP's run ? these are like a 30mm and 33 mm (staggered) offset
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  14. #14 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    can i get any year SC motor and trans or does it have to be specific years. because i want to try and get mine out of a grannys car because it typically wont be ran as hard so i was thinking like a buick ultra or something
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  15. #15 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    noo park ave ultras are 96-97.. you wanna shoot for 98+.
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  16. #16 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    okay i figured the Ultras would work cuz my bro has a 3800 series 2 SC from a Ultra, i guess its the 97 motor though. But i can get a SC motor and trans from any 98 and up GP, Bonne, Regal and what else ? i know the 97 trans were weak
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  17. #17 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    well 97 sc trans was good. im saying though, why not beef up your trans and have the 3.29 gears?
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  18. #18 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    well im pretty serious about doing this motor swap if these wheels come through hopefully the offsets will fit. What kinda things can i do to beef up the tranny besdies getting new gears . Btw whats the cost on those
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  19. #19 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
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    If you're gonna be breaking the motor down to clean it, then I'd powdercoat things, not paint. Paint doesn't last too long (even the "high-temp" stuff) and will look crappy after a while. On the tranny, contact Dave at tripleedgeperformance.com, or find a Tim King trans. Should last you quite a while as they are very well built.

    And here, courtesy of Bio, is a rundown on your wheel question. Maybe it will help clear up any issues or questions you have...

    Tire sizing

    The stock tire size is 225/60/16. Here are the sizes for wheels that have the same overall diameter and that are most typical for people to run:

    235/55/17
    245/50/17
    235/50/18
    245/45/18
    235/45/19
    245/40/19
    245/40/20
    245/35/20


    Wheel bolt pattern

    Our cars stock have a 5x115 bolt pattern. Now that's all fine and dandy, but wheels with a bolt pattern of 5x114.3 also fit. If they wobble or vibrate a lot you may need to run hubcentric rings, but that is all you would need in order to run them. Some people say that the slightly smaller bolt pattern puts stress on the studs and will snap them when driving aggressively. There are a ton of people who have been running that bolt pattern for years who would argue hardly against that point. This means that as well as some GM fitments, you can also look for mustang, eclipse, maxima, etc. wheels because they have the same bolt pattern. The thing that matters is the hub bore. So long as the hub bore is the right size then you're good.

    *NOTE: THIS THREAD IS ASSUMING YOU WILL BE RUNNING A TIRE AND WHEEL SIZE THAT IS VERY CLOSE, OR WITHIN 3% OF THE STOCK TIRE SIZE (OVERALL DIAMETER). For a great website to compare tire sizes, go to 1010TIRES.COM and check out their tools.*

    If you want to run a 235/245 tire:

    With the tire size usually close to the stock overall diameter, you should be able to follow these offsets for easier fitment:

    17" wheel, up to 8.5" wide: +32mm offset to +50mm offset
    18" wheel, up to 8.5" wide: +35mm offset to +48mm offset
    19" wheel, up to 8.5" wide: +38mm offset to +45mm offset
    20" wheel, up to 8.5" wide: +38mm offset to +42mm offset
    etc.
    etc.

    You want to be able to run a wider wheel or a lower offset, then continue on and learn a little more about aggressive wheel fitments.

    Aggressive wheel fitments: Hellaflush and DUBs

    Many people want to push the limits on the wheels they are able to put into their car. I will not go into lifting kits because I am completely against them and at no point would I ever recommend using a wheel setup that will exceed the stock overall diameter for the stock wheels (reference 1010TIRES.COM tire size calculator). There are a few ways to get wider wheel and tire setups as well as bigger wheels into the fenders without rubbing. You can either run a 'correct' offset and sized wheel/tire combo (which we all know is no fun at all), or you can get into some fender work.

    With enough fender work I would venture to guess that you could run down to a +15mm offset, but this is assuming you will be rolling and pulling all the fenders on the car. Fortunately Pontiac has made this super easy for us and I can tall you right now that if you have a little patience to work on the car then you can do fender work.

    Within the 'how to' section there are two write ups on rolling your fenders. I suggest you follow THIS link instead of the second link that suggests cutting the fenders (rolled_fender_2). The fenders are easily enough rolled with a heat gun and a rubber mallet. You need the heat gun because you need to keep the paint HOT to the touch, but not hot enough to bake the crap out of it. This will prevent the paint from cracking, which WILL peel. You want it to be too hot for you to hold onto, but touching it for a moment is okay. Now, temperature is relative, so don't go overboard. I have personally rolled all the fenders on the car this way and it is no harder than whacking the fenders a bunch of times. Start out hitting the fender lip SOFTLY and get harder. You have to find out how hard you have to hit the fender lip to bend it because no one can describe it exactly to you. Start in the middle and work your way out, but make sure to keep the bend even all the way across. Don't bend the middle in before the sides, go back and forth and do the WHOLE FENDER all at once. This will prevent the fender from creasing anywhere. It might take a while, but once you figure out the first fender, the other three are easy.

    Rolling your fenders will give you a bunch of clearance for running a wider wheel or bigger tires in comparison to how they are stock. You gained yourself at least an inch more of room. However, if rolling your fenders does not clear the wheel and tire setup you are trying you run we have to go for more drastic measures: pulling the fenders. If you want to pull your fenders I HIGHLY suggest using a fender rolling tool (reference the 'good' link for fender rolling, its option 2). You can rent these tools online as well as buy your own if you're really looking to spend a big chunk of money on a tool youll use once. Just go to google and search 'fender rolling rool rental' and a bunch of places will pop up. Getting the tool is up to you.

    What you want to do is to gradually tighten up the fender roller up and roll it back and forth on the fender. Using it to roll the fender is easy enough, but to ROLL the fenders you need to take it a step farther. Continue to tighten up the rolling tool and rolling it until you 'flare' the fender. This will give added clearance for your wheels. How much you want to pull the fenders is up to you and your needs. Once you go far enough you WILL end up creasing the fenders or making them 'wavy'. Only run as much pull as you need. Also, remember that even with the fender rolling tool you STILL NEED HEAT. REMEMBER YOUR HEAT GUN.

    The biggest wheels and lowest offset wheels I have seen on a grand prix thus far are +24mm 18x9 mustang wheels. All fenders were rolled to make this setup work and the car wasn't severely lowered.

    I hope this has helped everyone to help themselves with choosing a wheel and tire setup. If you stay within the normal ranges of offsets within a certain sized wheels then you will be just fine. Anything beyond these 'normal' setups and I cannot guarantee that they will not rub, nor will I guarantee they won't rub even if you are within the limits. All wheels and tires are made differently and everyone's suspension setup is also different.
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  20. #20 Re: 03 LE GT.... GTP motor swap ???? need opinions. 
    GT Level Member kking89's Avatar
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    Quote Originally Posted by FordMan77 View Post
    If you're gonna be breaking the motor down to clean it, then I'd powdercoat things, not paint. Paint doesn't last too long (even the "high-temp" stuff) and will look crappy after a while. On the tranny, contact Dave at tripleedgeperformance.com, or find a Tim King trans. Should last you quite a while as they are very well built.

    And here, courtesy of Bio, is a rundown on your wheel question. Maybe it will help clear up any issues or questions you have...

    Tire sizing

    The stock tire size is 225/60/16. Here are the sizes for wheels that have the same overall diameter and that are most typical for people to run:

    235/55/17
    245/50/17
    235/50/18
    245/45/18
    235/45/19
    245/40/19
    245/40/20
    245/35/20


    Wheel bolt pattern

    Our cars stock have a 5x115 bolt pattern. Now that's all fine and dandy, but wheels with a bolt pattern of 5x114.3 also fit. If they wobble or vibrate a lot you may need to run hubcentric rings, but that is all you would need in order to run them. Some people say that the slightly smaller bolt pattern puts stress on the studs and will snap them when driving aggressively. There are a ton of people who have been running that bolt pattern for years who would argue hardly against that point. This means that as well as some GM fitments, you can also look for mustang, eclipse, maxima, etc. wheels because they have the same bolt pattern. The thing that matters is the hub bore. So long as the hub bore is the right size then you're good.

    *NOTE: THIS THREAD IS ASSUMING YOU WILL BE RUNNING A TIRE AND WHEEL SIZE THAT IS VERY CLOSE, OR WITHIN 3% OF THE STOCK TIRE SIZE (OVERALL DIAMETER). For a great website to compare tire sizes, go to 1010TIRES.COM and check out their tools.*

    If you want to run a 235/245 tire:

    With the tire size usually close to the stock overall diameter, you should be able to follow these offsets for easier fitment:

    17" wheel, up to 8.5" wide: +32mm offset to +50mm offset
    18" wheel, up to 8.5" wide: +35mm offset to +48mm offset
    19" wheel, up to 8.5" wide: +38mm offset to +45mm offset
    20" wheel, up to 8.5" wide: +38mm offset to +42mm offset
    etc.
    etc.

    You want to be able to run a wider wheel or a lower offset, then continue on and learn a little more about aggressive wheel fitments.

    Aggressive wheel fitments: Hellaflush and DUBs

    Many people want to push the limits on the wheels they are able to put into their car. I will not go into lifting kits because I am completely against them and at no point would I ever recommend using a wheel setup that will exceed the stock overall diameter for the stock wheels (reference 1010TIRES.COM tire size calculator). There are a few ways to get wider wheel and tire setups as well as bigger wheels into the fenders without rubbing. You can either run a 'correct' offset and sized wheel/tire combo (which we all know is no fun at all), or you can get into some fender work.

    With enough fender work I would venture to guess that you could run down to a +15mm offset, but this is assuming you will be rolling and pulling all the fenders on the car. Fortunately Pontiac has made this super easy for us and I can tall you right now that if you have a little patience to work on the car then you can do fender work.

    Within the 'how to' section there are two write ups on rolling your fenders. I suggest you follow THIS link instead of the second link that suggests cutting the fenders (rolled_fender_2). The fenders are easily enough rolled with a heat gun and a rubber mallet. You need the heat gun because you need to keep the paint HOT to the touch, but not hot enough to bake the crap out of it. This will prevent the paint from cracking, which WILL peel. You want it to be too hot for you to hold onto, but touching it for a moment is okay. Now, temperature is relative, so don't go overboard. I have personally rolled all the fenders on the car this way and it is no harder than whacking the fenders a bunch of times. Start out hitting the fender lip SOFTLY and get harder. You have to find out how hard you have to hit the fender lip to bend it because no one can describe it exactly to you. Start in the middle and work your way out, but make sure to keep the bend even all the way across. Don't bend the middle in before the sides, go back and forth and do the WHOLE FENDER all at once. This will prevent the fender from creasing anywhere. It might take a while, but once you figure out the first fender, the other three are easy.

    Rolling your fenders will give you a bunch of clearance for running a wider wheel or bigger tires in comparison to how they are stock. You gained yourself at least an inch more of room. However, if rolling your fenders does not clear the wheel and tire setup you are trying you run we have to go for more drastic measures: pulling the fenders. If you want to pull your fenders I HIGHLY suggest using a fender rolling tool (reference the 'good' link for fender rolling, its option 2). You can rent these tools online as well as buy your own if you're really looking to spend a big chunk of money on a tool youll use once. Just go to google and search 'fender rolling rool rental' and a bunch of places will pop up. Getting the tool is up to you.

    What you want to do is to gradually tighten up the fender roller up and roll it back and forth on the fender. Using it to roll the fender is easy enough, but to ROLL the fenders you need to take it a step farther. Continue to tighten up the rolling tool and rolling it until you 'flare' the fender. This will give added clearance for your wheels. How much you want to pull the fenders is up to you and your needs. Once you go far enough you WILL end up creasing the fenders or making them 'wavy'. Only run as much pull as you need. Also, remember that even with the fender rolling tool you STILL NEED HEAT. REMEMBER YOUR HEAT GUN.

    The biggest wheels and lowest offset wheels I have seen on a grand prix thus far are +24mm 18x9 mustang wheels. All fenders were rolled to make this setup work and the car wasn't severely lowered.

    I hope this has helped everyone to help themselves with choosing a wheel and tire setup. If you stay within the normal ranges of offsets within a certain sized wheels then you will be just fine. Anything beyond these 'normal' setups and I cannot guarantee that they will not rub, nor will I guarantee they won't rub even if you are within the limits. All wheels and tires are made differently and everyone's suspension setup is also different.
    Thank u for the info, but im still a little mixed up on determining if these wheels will fit.
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