swapping chevy tranny into my 03 wrx
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This is a discussion on swapping chevy tranny into my 03 wrx within the Transmission & AWD forums, part of the Tech & Modifying & General Repairs category; I'm on my third tranny now and its only time before i really destroy this one. I'm considering the sti ...

  1. #1
    Registered User twintshelby's Avatar
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    swapping chevy tranny into my 03 wrx

    I'm on my third tranny now and its only time before i really destroy this one. I'm considering the sti swap but the price is kinda up there. then my buddy who is a chevy guru told me about this article he saw in a magazine where someone swapped a turbo 400 tranny into a wrx.

    Ive been doing some research and i found a company that makes adapters from a wrx block to a chevy bolt pattern. I'm thinking of running the t56 tranny since its a top loader tranny and it would be easier to install than a muncie or a 4speed would be.

    My wrx is not a daily driver, mainly a weekend warrior and track car. yes its gonna suck losing the awd and the great 60' times but in the long run its gonna be worth the price and ease of removal and installation.

    im waiting on wilcap to email me back on the quote for the price of the adapter and flywheel.

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    Registered User xFalleNx's Avatar
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    Re: swapping chevy tranny into my 03 wrx

    I'm curious as to what you keep doing to blow transmissions up.

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    Registered User twintshelby's Avatar
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    just like any other subaru driver. 7k launches and what really killed the first 2 was missing 3rd and shoving it in between 3rd and 5th. breaking the shift forks.

    im putting down 372awhp right now and i know the stock 5 speeds dont handle much over 300.
    Last edited by twintshelby; 09-21-2012 at 05:27 AM. Reason: misspelled words

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    Registered User twintshelby's Avatar
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    and my winter build is a 2.5 hybrid build and my hp goal is 500 whp

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    Master Baiter EJ257's Avatar
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    What are you replacing the transmissions with? Have they been built properly to withstand the power you're making?
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    Registered User twintshelby's Avatar
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    Quote Originally Posted by EJ257 View Post
    What are you replacing the transmissions with? Have they been built properly to withstand the power you're making?
    Well back then. I was at 218whp. 220wtq. Replaced with stock tranny.

    With my power level goal, I'm either gonna spend 5k to make my 5speed bullet proof or 5k for the Sti swap.
    Installing a 6speed Chevy tranny would put me around 2500 and I wouldn't come close to breaking the tranny

  8. #7
    The Default One SeattleJeremy's Avatar
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    The rear differential and axles where not made to handle that kind of power all by them selves. There are examples of RWD conversions with stock power levels initiating the rear diff in very few miles.

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    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by twintshelby View Post
    I'm either gonna spend 5k to make my 5speed bullet proof..

    Not possible, no matter how much you spend. Even with straight cut PPGs, blast plates, etc, you're still only looking at it reliably holding around 450wtq. The stock six speed is arguably more reliable than the stoutest 5mt you could ever build.

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    Resident meany-rator 06wrx4me's Avatar
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    That WRX you speak of with the turbo 400 tranny was a member and a vendor here. It was/is Bobby and Jen's (Pre racing in oregon) yellow bugeye drag car. What your buddy didn't tell you is that Bobby also swapped out the rear diff for a Ford 9", tubbed the WRX, removed the back seat and installed a full cage. His goal was 9 or 10 sec quarter miles. He was running a built WRX motor with an FP Red turbo.

    If you do a Chevy tranny swap which would be cool, You will need to swap the rear diff too, as that poor little R160 would barely live in AWD form at elevated levels. Options for IRS would probably place you into a built R200 with custom Diff mount and rear subframe. You'd also have to buy befier rear CV axles rated for the torque and that had the correct flange and hub configurations.

    I vote Chevy swap because I am interested in the build thread and configuration.

    Edit:

    What would be completely awesome (albeit a little pricey) would be a corvette transaxle swap with rear suspension and subframe from a C5.
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    \_(ツ)_/ Rambo's Avatar
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    Quote Originally Posted by 06wrx4me View Post
    What would be completely awesome (albeit a little pricey) would be a corvette transaxle swap with rear suspension and subframe from a C5.
    That would be... custom. Why not just dump in an LS engine while you're at it then? You basically end up with a 4-door GTO I suppose.
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    He simply abides. SD_GR's Avatar
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    I have a soft spot for the Jaguar IRS with inboard brakes.

    Since none of this stuff is realistic on a "if you have to ask..." basis, I'd like to throw in my Jag idea.
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    Cheeky Bastage! spirited09wrx's Avatar
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    add 13" rear wheels from the viper as well
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    Resident meany-rator 06wrx4me's Avatar
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    Quote Originally Posted by Rambo View Post
    That would be... custom. Why not just dump in an LS engine while you're at it then? You basically end up with a 4-door GTO I suppose.
    Sinmply because I like the turbo'd subi motor, and the subi motor has a much lower CG than an LS engine and weighs significantly less.
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    Just get a corvette

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    Registered User twintshelby's Avatar
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    I just asked a simple question.
    Last edited by mycologist; 09-21-2012 at 09:11 PM. Reason: Watch it.

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