Thread: DIY Turbo for 04 grand prix?

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  1. #1 DIY Turbo for 04 grand prix? 
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    Hello, I would like to turbo charge my grand prix however the only kits I have found run around 2k+. I would like to build my own kit if any of y'all have any suggestions/part list I would love to hear it!

    P.s. I know there are other posts on Google however i would like 04 gp specific with people who have experience with this ride or body style.

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  2. #2 Re: DIY Turbo for 04 grand prix? 
    GrandPrix Junkie spazzz's Avatar
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    Quote Originally Posted by GPOBD View Post
    Hello, I would like to turbo charge my grand prix however the only kits I have found run around 2k+. I would like to build my own kit if any of y'all have any suggestions/part list I would love to hear it!

    P.s. I know there are other posts on Google however i would like 04 gp specific with people who have experience with this ride or body style.
    My disclaimer is I drive a non turbo car. I drive an 04 but a turbo is a turbo on these cars. Anything can happen

    But 2 grand is about right isn't it for the low end, unless you have serious pipe fabbing skills.
    Keep watching for people dumping useless Grand Prix parts and nabbing up the parts from your hit list.
    By the time that happens maybe?you will have read possibly enough info to give it a go. Sheer determination will give you the best results

    But I think every 3800 dude will tell you to grab a tuner and learn how to tune your current setup first. You will need it regardless.
    And then there is the transmission discussion.......

    He might still have his turbo setup for sale..http://www.grandprixforums.net/threa...s-TEP-Cam-More
    Last edited by spazzz; 07-10-2017 at 08:17 PM.
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  3. #3 Re: DIY Turbo for 04 grand prix? 
    GXP Level Member GTPpower's Avatar
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    That's a set I just finished welding.

    I have lots of recommendations, but I would first need to know some details.

    How much power do you want to make? How reliable do you need your car? How much do you want to spend?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  4. #4 Re: DIY Turbo for 04 grand prix? 
    GXP Level Member Turbocharged400sbc's Avatar
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    I just priced out some of the parts for the front engines turbo headers and we're going to spend almost six hundred bucks just in stainless tubing and a couple V bands.
    And that's with me being able to waterjet out three-quarter inch stainless flanges and CNC machine 3 pairs of them with a 25 degree upward angle for the primary tube to remove the hard turn at the exhaust Port exit that almost all setups have.
    It does look like Medusa will finally see the light of day but being that we want to use a 76 mm......
    ~James~ Psychotic Gearhead
    projects: 84 Cressida waGN~ 90 LN3 3800, equal length headers, T70, 89 700r4, misc parts,
    1994 Oldsmobile 442 (462ci-4wd-2 engines) L67/4t80e^2,
    00 Turbo Regal 608 fwhp 575ftlbs at 5500rpm, 98 WhippledRiv, 97 GTP
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  5. #5 Re: DIY Turbo for 04 grand prix? 
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    Quote Originally Posted by GTPpower View Post


    That's a set I just finished welding.

    I have lots of recommendations, but I would first need to know some details.

    How much power do you want to make? How reliable do you need your car? How much do you want to spend?
    I'm currently running a gt1 with stock exhaust and a cone air filter but everything else is stock(by choice, for now). So i would assume I currently make around 200hp( according to stats) I would like to easily see a 50 increase but don't want to push it too far so I would say 300ish would be my max. I want it reliable so again I don't want to over do it.
    As for budget, right now I'm feeling out my options because I'd rather spend less than the 3k zzp requires.

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  6. #6 Re: DIY Turbo for 04 grand prix? 
    GTP Level Member
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    Either way you will need a new transmission.

    Cheap
    Fast
    Reliable

    You can't have all three.
    GPONA #1 Cyber Bully
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  7. #7 Re: DIY Turbo for 04 grand prix? 
    GXP Level Member GTPpower's Avatar
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    A stock trans will last a long time at 300hp, provided that you don't beat the **** out of it.

    300hp is super easy to get. My next questions are what type of fuel do you want to run and can you weld?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  8. #8 Re: DIY Turbo for 04 grand prix? 
    Killa Bee Scottydoggs's Avatar
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    it does suck when your mods cost more then what you paid for your car lol i got mine for $800 7 years ago. i passed that mark a long time ago in mod funds.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  9. #9 Re: DIY Turbo for 04 grand prix? 
    I live here. stealthee's Avatar
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    Quote Originally Posted by Scottydoggs View Post
    it does suck when your mods cost more then what you paid for your car lol i got mine for $800 7 years ago. i passed that mark a long time ago in mod funds.
    Ugh. I paid $4700 for my Stealth way back in 02. I definitely put that into it before it got parked. I'll probably have near that into it again getting it back on the road, but at least everything is going to be new.


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  10. #10 DIY Turbo for 04 grand prix? 
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    Quote Originally Posted by GTPpower View Post
    A stock trans will last a long time at 300hp, provided that you don't beat the **** out of it.

    300hp is super easy to get. My next questions are what type of fuel do you want to run and can you weld?
    I figured it would last decently at 300hp.

    Fuel type doesn't matter so much, and I cannot weld however I'm sure I could get some welding at a decent cost.

    Also please note my trans was rebuilt 50k miles ago
    Last edited by GPOBD; 07-12-2017 at 12:34 PM.
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  11. #11 Re: DIY Turbo for 04 grand prix? 
    GXP Level Member GTPpower's Avatar
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    In that case, I would switch to e85 and 60lb injectors. Find a pt61 or 6262 turbo and have a shop weld it to your crossover, and weld up a 2.5" downpipe. Then all you need is a pipe to connect the compressor outlet to the throttlebody. You'd need a wastegate and Bov welded in too.

    Without being able to weld, it's probably cheaper if you just watch the classifieds for a used kit.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  12. #12 Re: DIY Turbo for 04 grand prix? 
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    Quote Originally Posted by GTPpower View Post
    That's a set I just finished welding.
    Good job, I like the Inconel bellows. Most folks don't know to include that to take up the mismatched thermal expansion for the wastegate pipe.
    Lifespeed
    2001 GTP
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