Thread: aluminum subframe

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  1. #1 aluminum subframe 
    GT Level Member sdenton8's Avatar
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    Has anyone heard or has done this to their car. Aluminum subframe off of a 04 impala on the grandprixs. I heard its about a 25-35 lb drop in wieght alone and is suspost to be stronger/stiffer also. It seems like a good idea to help everyone and take some lbs off of these cars and help them on the street and track.





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  2. #2 Re: aluminum subframe 
    #Billsnamechangessuck MrPoopyButthole's Avatar
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    04+ GPs have them too

    Cry havoc and let slip the dogs of war.
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  3. #3 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    I was told that they do also. But I wasnt for sure on those. But would either one of the aluminum subframes work on the 98-03 gps? Would they bolt right up or needed modded to work?
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  4. #4 Re: aluminum subframe 
    DUI BABY Bio248's Avatar
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    you dont want to remove weight from the font end. we have enough traction issues as it is.

    also, the aluminum subframe is known to crack.
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  5. #5 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    Ok I didnt know about all that. I mite just forget about that then. I would like to take some wieght off of the car though. Would do you guys say to save some lbs?
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  6. #6 Re: aluminum subframe 
    DUI BABY Bio248's Avatar
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    go on a diet.

    really, there arent a ton of places you can remove weight without losing its 'streetability'.
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  7. #7 Re: aluminum subframe 
    youtu.be/xhrBDcQq2DM FoSHO99's Avatar
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    They are a pretty significant weight savings and if they were known to crack they wouldn't be on 01+ impalas and 04+ gp's. If you can get it for cheap and don't mind the hassle of swapping them out, then i'd be all for it.
    2001 GTP PT61 Turbo, E85, Stock Motor
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  8. #8 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    I dont wieght all that much. Im 6'1" and 200 lbs. Thats not to bad.
    I heard of taking out the rear bumper bracket and the sound deading under the carpet. But i dont know about all that. But the aluminum subframe would be a great wieght reduction and I heard they crack. But the monte ss hase the same motor and trans as we do. But the have the aluminum frame and I wouldnt see how they would crack. I know these cars have tracion probs.
    Last edited by sdenton8; 07-20-2010 at 10:46 PM.
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  9. #9 Re: aluminum subframe 
    Turbo is the way to go. BillBoost37's Avatar
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    Been there done that. I hear that only under a ton of HP mods they crack. Know a lot of locals with Stage 3 setups that never had issues. Not sure what it takes to crack one.
    I drink..so consider that when reading my posts.

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  10. #10 Re: aluminum subframe 
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    they do BEND.

    I have one here I can take pictures of to show you.
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  11. #11 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    Yea if you would take some pics so I could see it. How would you be able to bend one of those?
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  12. #12 Re: aluminum subframe 
    GTX Level Member Ridin ON Chrome's Avatar
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    Its 20-21lbs lighter and you will need the bolts and bushings
    Front Upper mounts #10402880 (x2)
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    98 GTP-Mods? Yeah, lots of them
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  13. #13 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    I didnt know that you would have to have everyhitng like that for the swap. Is it really worth the 20lb diff in wieght?
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  14. #14 Re: aluminum subframe 
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    You'd need an alignment as well.

    Still want a picture?
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  15. #15 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    this thing is sounding more and more of a pain to do then I want. I just spent 200 on a alignment at the dealer. I know I got ripped off
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  16. #16 Re: aluminum subframe 
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    yuppers, $80-100 around here.
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  17. #17 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    Damn I must be in the wrong line of work. lol
    But anyone have any ideas to shed some wieght of these cars?
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  18. #18 Re: aluminum subframe 
    youtu.be/xhrBDcQq2DM FoSHO99's Avatar
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    Quote Originally Posted by sdenton8 View Post
    Damn I must be in the wrong line of work. lol
    But anyone have any ideas to shed some wieght of these cars?
    What year? there is a lot of onstar crap you could take out
    2001 GTP PT61 Turbo, E85, Stock Motor
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  19. #19 Re: aluminum subframe 
    GT Level Member sdenton8's Avatar
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    I have a 2000 gtp. I dont think I have onstar??? Maybe I do and dont know it. But I doubt I do. Anything else I could take off?
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  20. #20 Re: aluminum subframe 
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    in the trunk in the rear left corner there would be a onstar box if you had it.
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