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Technical 700 r4 tv cable/plunger issue

Discussion in 'Traditional Hot Rods' started by vincentvincent, Apr 20, 2021.

  1. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent

    hi
    i just installed this 700r4
    it has a shift kit


    i adjsuted the tv cable with the pan off
    i know that at WOT the tv plunger should be fully depressed in the chamber
    but here at WOT the tv plunger is not completly in ( see picture )
    its not stuck because with my finger i can rotate the lever and fully depressed it
    at the carb when i pull the cable with pliers , and someone else looking under , its still doesnt get fully depressed !!!!!

    side note , the tv valve spring is very stiff compared to a stock one

    previous stock 700r4 i didnt have this issue

    any idees?
     

    Attached Files:

  2. saltflats
    Joined: Aug 14, 2007
    Posts: 11,247

    saltflats
    Member
    from Missouri

    I would back track to what changed from when you said it worked fine.
     
  3. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent


    nothing
    just a different 700r4 with a shift kit
    i also used same universla cable

    but no im wondering if the housing cable , transmission side , doenst stop my cable
    because now
    when i think, that with pliers , i could not get it to move more .
    i may have to double check that
     
  4. saltflats
    Joined: Aug 14, 2007
    Posts: 11,247

    saltflats
    Member
    from Missouri

    Sounds like a good trail to fallow.
     

  5. mgtstumpy
    Joined: Jul 20, 2006
    Posts: 9,094

    mgtstumpy
    Member

    Correct geometry at the engine is critical, the transmission end is the least of your worries. You need to have the correct bracket for TV cable and the cable needs to be set up correctly at WOT. T700 TV cable setup diagram.jpg
     

    Attached Files:

    David Gersic likes this.
  6. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent

    thanks
    and i do
    before it was working great
    just a new 700r4 with some internal upgrade
     
  7. mrspeedyt
    Joined: Sep 26, 2009
    Posts: 795

    mrspeedyt
    Member

    (note to self. stick with the powerglide.)
     
  8. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent


    im not sure to understand
     
    reagen likes this.
  9. coilover
    Joined: Apr 19, 2007
    Posts: 680

    coilover
    Member
    from Texas

    It's a tongue in cheek comment about keeping it simple. An old racers adage is to use a turbo 350 up to 400hp, a turbo 400 up to 600hp, and a Powerglide up to no one knows since they live behind a 5000hp fueler engine. Not mentioned is they are a two speed and no overdrive BUT simple.
     
    vincentvincent, reagen and mrspeedyt like this.
  10. If you pull on the cable with the carb linkage ‘at rest’ - Does the plunger bottom out?
     
  11. Marty Vanin
    Joined: Feb 22, 2017
    Posts: 69

    Marty Vanin
    Member

    Could be the link is getting bottomed out inside the cable housing at the trans end. What type of universal cable? There were some that didn’t work out to well.
     
  12. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,770

    Ebbsspeed
    ALLIANCE MEMBER

    How about that stiff spring? Did you put the shift kit in, or was it already in the new trans?
     
  13. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 3,985

    2OLD2FAST
    Member
    from illinois

    Or a Muncie !
     
  14. 1971BB427
    Joined: Mar 6, 2010
    Posts: 7,252

    1971BB427
    Member
    from Oregon

    Powerglides can be built to take a ton of HP, but they're sure not much good if your car doesn't have a ton of HP! A TH is a great trans in either variant, but without the OD it's lacking at high speed, unless you have tall gears. The 700R4 is not able to handle extreme HP, but it sure makes a great all around transmission. And changes a decent cruiser into a great cruiser. Not to mention fuel efficient, even with low rear axle ratios.
     
  15. bbmach
    Joined: Mar 5, 2021
    Posts: 8

    bbmach

    Where is the plunger in relationship to the arm, when the cable is at the idle position?
     
  16. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent

    i got it like that
    but it was working before
     
  17. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent

    yeah this is what im thinking
    i got an universal one from summit, that wasnt an issue with previous 700r4
    i just got a new one today a B&M and i can see the cable is going just a bit deeper in the housing but not much...like 2mm
     
  18. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent


    i will have to go back to it and look
    from memory arm is touching the plunger at idle
     
  19. bbmach
    Joined: Mar 5, 2021
    Posts: 8

    bbmach

    Yes - double-check. That’s the right starting point. From there, the plunger will bottom at WOT when the throttle arm geometry is correct.
     
  20. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,770

    Ebbsspeed
    ALLIANCE MEMBER

    OK, your original post has a couple of statements that led me to believe this transmission has always had this issue.

    "i just installed this 700r4"
    "previous stock 700r4 i didnt have this issue"
     
  21. vincentvincent
    Joined: Mar 30, 2021
    Posts: 8

    vincentvincent

    i ended up making a little plate/spacer and also added an oring and it did the trick

    i got a new cable b&m and it was still the same situation

    its still interesting that with the other 700r4 with same cable it didnt happen

    on the pictures you can see tv plunger at idle and at wot , all fixed now
     

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