TH350 - 2004R Conversion Tips & Tricks

Discussion in 'Transmission & Driveline Topics' started by Twisted_Metal, Jun 16, 2006.

  1. ZS10

    ZS10 Moderator Staff Member Lifetime Gold Member

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    There's lots of performance converters for 200-r4s converters made with lockup. Any Hughes part # that ends in L is a lock up. TCI's Streetfighter 10" is offered in lock up as well.
     
  2. jayb53guy

    jayb53guy Veteran Member Gold Member

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    Excellent thread! :D
     
  3. jakeshoe

    jakeshoe Veteran Member Lifetime Gold Member

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    When did the TH350 begin to use a TV cable?

    I must not have gotten that memo...

    The "detent" cable on a TH350 doesn't apply more pressure to the clutches, it simply operates the detent valve for passing gear operation.
     
  4. jakeshoe

    jakeshoe Veteran Member Lifetime Gold Member

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    No.
     
  5. mrvedit

    mrvedit Veteran Member

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    This certainly is a great and informative thread. Especially that the 200R4 can use the TH350 driveshaft as-is without shortening.

    On another thread someone said something like "we all know that the 200R4 is stronger than the 700R4", yet when I check what is available from the performance rebuilders, I can only find a 200R4 rated at 450hp while the 700R4 is rated at 600hp:

    http://racetransmissions.com/store/product_info.php/cPath/1_25_104_120/products_id/185

    http://racetransmissions.com/store/product_info.php/cPath/1_25_56_112/products_id/199

    Also B&M Transmissions only sells a performance 700R4, not a 200R4. I'm just a newbie, but it does seem that more peformance parts are available for 700R4 and with improved internals they can handle 600hp. Also it appears that a Ford driveshaft will fit it perfectly in a 2nd gen.

    Of course, I also see 4L80E rated at up to 800hp. (If someone wants to discuss that, we should probably start a new thread and not dilute this great one.)
     
  6. jakeshoe

    jakeshoe Veteran Member Lifetime Gold Member

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    B&M doesn't even have a trans builder anymore according to an inside source I know.

    The 200-4R is a better trans IMO. Not cheap but I can build a 200-4R for up to 800 HP. I wouldn't normally attempt a 700 at 600 HP (but I do have them out there at ~600 HP).

    Power flow through a 700 is messed up for performance use.

    Many builders can't get a 200-4R right though.

    Jake
     
  7. jakeshoe

    jakeshoe Veteran Member Lifetime Gold Member

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    The myriad of myths on the internet about auto trans (and anything) are a pet peeve of mine.

    If you can find a GM Principles of Operation manual for a TH350 they are one of the best resources available. I have them for the 400, 200-4R, and 4L80E and there is nothing as accurate or informative.
    It doesn't show you how to rebuild it, but it explains the operation in detail.

    I still study the TH400 book and learn new stuff every time I open it up. It's amazing the "little" stuff most people don't know, even profession builders who have been doing it for 30 years don't know.
     
  8. Dukes72

    Dukes72 Veteran Member

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    I can totally respect that statement. I will look for the GM principals books. It's pretty easy to just follow directions for rebuilds and other work without fully understanding functionality.

    Thanks.
     
  9. 79406RS

    79406RS Veteran Member

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    Thanks!
     
    Last edited: Mar 2, 2012
  10. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    Are you using the same ShiftWorks kit to adapt the shifter to the transmission?
    I found it helped to twist the bracket a few degrees to better align the shifter cable to the shift arm.

    It's been several years since I did this mod. This pic is about the best I can do to explain it without crawling under the car to take pics and measurements.

    See post #77 of this thread for the original pic.
    (TinyPic lost it. :( )
     
    Last edited: Jun 6, 2021

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