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mopar trans guys help me pleaze

Discussion in 'The Hokey Ass Message Board' started by slider, May 8, 2005.

  1. slider
    Joined: Oct 9, 2002
    Posts: 29

    slider
    Member

    heres the set up. dodge dart 360 with a 727. column shift with 904 linkages. hughes rebuild kit with a transgo shift kit.

    first problem would shift into first under hard or soft pedal. second around 40 wouldn't shift into 3rd until 70- 80 if at all.

    my fix..adjust tv adjust screw to .800 was about an inch out the PR adjustment was in 5 turns from flush so turned it back flush. the tv rod from the carb was hitting the shift lever so ground the arm to clear. also added to the the tv lever coming out of the trans to clear the shift lever guess 904 links and 727 are different. set the tv rod as per book stick drill in holes and hold lever full forward. adjusted tv rod at carb to sit about 1/4 back at idle. book said flush but read the longer the rod harder the shift and was already shifting to hard.

    problem now.... starts off like its in 3rd gear no shifting what so ever soft or hard pedal can shift it manually though.

    my fix..??????

    a few questions.
    with my current set up the tv adjust is at .800 but the tv rod wont push tv valve (transgo said to grind stem to .281) in all the way no matter how i adjust the rod. does this plunger need to be fully engaged at full throttle or at any time?

    according to transgo the tv adjust screw stated that some trans upshift to early so start with tv adjust screw at .800 and screw clockwise (in) to make shifts later so do i need to take the screw out again?

    any other suggestions or advice would be great!!

    so there you have it can anyone figure this out? ask more questions if you need more info and hopefully i can give it to you.
    Thanks slider
     
  2. JOECOOL
    Joined: Jan 13, 2004
    Posts: 2,769

    JOECOOL
    Member

    I've had a lot of 727's apart and I have no idea what your talking about with the TV and stuff.
    The kick down linkage from the carb to the trans is pretty straitforward.I****ume you are adjusting the throttle pressure valve inside the trans ,but as far as I know that only effects pressure, not when it will shift.The extra pressure is required when you want to shift with less overlap between the gears but usually requires more springs in the clutch drum and blocking of the accumulator among other mods.
    If the trans is a part throttle kick down the linkage adjustment will probably be different.

    Sorry I couldn't help more ,I'm having those Alshimers days lately
     
  3. The biggest problem I see is the transgo********* that was installed. Mopars do not need shift kits; they only need a small amount of adjustment to the kickdown settings and linkages, and some reworking in the valve body.

    You want the linkage to have no play in it at all and at WOT you want the kickdown lever all the back. The first 1/3 of the total level travel is just slack in the valve body, it doesn't start to come on until the last 2/3 of the moment.

    What year is the 727? the early ones had different kick down settings depending on the year. DAvid
     
  4. slider
    Joined: Oct 9, 2002
    Posts: 29

    slider
    Member

    the transmission is an early 70's i believe a 71. maybe part of my problem is trying to use 904 linkages with a 727. it just seems like i'm not getting enough throw in the linkages. Also i tend to aggree that maybe the shift kit wasn't such a good idea but to late now unless i can find another valve body. Think its ok to mess with the linkages and take out the first 1/3 of the travel such as adding to the total linkage length?

    Thanks,
    slider
     
  5. The idea is that that the kickdown only really matters when the throttle is at WOT or close to it. So when the car is at WOT, you want the kickdown wide open as well. At idle or close to it, the posistion does not matter, so you need not be concerned with it. One big problem with the kickdown linkage is that it is kind of weak, and flexes quite a lot, to the point of causing problems.

    Two of the modifications I do to valve body are tightening up the line pressure regulator spring, which in turn boosts the line pressure, and removing some of the slack in the kickdown lever.

    Beyond that, I really don't understand exactly what is going on with your car.


     

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