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SSedan64 SSedan64 is offline

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  1. SSedan64
    01-06-2013 11:55 AM - permalink
    The Gov doesn't really control Downshifts. The TV/ThrottleValve oil & TV Mod. Downshift Valve oil act against the Gov for downshifts.
    Not all Valvebodies will do a Part Throttle downshift. Some require a Full Throttle stab for a 4-3, 4-2* & 3-2 downshift, called a Detent downshift.
    It's very complicated & difficult to explain.
    If you can find a "GM 200-4R Principles of Operation" manual, it has all the oil flow schematics & mechanical diagrams etc..
    CK Performance has a very nice 200 Pg. Technical Manual that also has this Info.

    Lightening the Large weight will cause later/higher rpm Part Throttle upshifts .
    Removing the Spring from Large weight will also raise shift point rpm/speed.
    * Not all Valvebodies will do a 4-2 downshift.

  2. dwwl
    01-06-2013 10:15 AM - permalink
    I think the large weight on the governor is for down shifts but not sure what else it may be doing..
    so if i lightened it up a little, would it my 200 4r down shift a little sooner? I was told also that if i remove the spring from the larger weight, that my wide open shifts would be higher, but not sure. If you know, let me know. DON

About Me

  • About SSedan64
    Macon, GA.
    Cars, engines Trucks


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  • Last Activity: 11-22-2013 01:34 PM
  • Join Date: 12-15-2007

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