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700r gurus, no tcc solenoid

Discussion in 'The Garage' started by arq, Dec 13, 2003.

  1. arq

    arq 1/2 ton status

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    I just poped open my 700r tranny i got many, many, many moons ago. I found no wires or solenoid inside, basicly no "electronics" inside. can i just go out and get myself a solenoid or what else will i need. I belive it's from a 90.

    thanks,

    ARQ.
     
  2. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    the wiring harness is basicly the same from 89 to 93. your best bet is to go to a tranny shop and get a complete wiring harness for your tranny
     
  3. R72K5

    R72K5 Banned

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    is the case wiring plug connector even there ? if not then i would think you would have an open hole in your case
     
  4. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    From my understanding, not all 700R4's were electronic lockup. Some were full Hydraulic.
     
  5. arq

    arq 1/2 ton status

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    there was no solenoid or wire harness found in it. the external wire harness was there too but when i opened it up there was no harness. my first thought was, WIRELESS /forums/images/graemlins/confused.gif

    I have heard that there is a kit to convert from solenoid to hydrolic. is there any benefits/drawbacks of having it hydrolic?? other than no choice of when to lock it up.

    i also went to the local pick a part and found one half way taken apart. so i completed the tear down /forums/images/graemlins/smile.gif. i did notice that the one with the solenid, i was able to push the converter clutch valve(CCV) in a bit. the one i have i cannot push in the CCV at all. the CCV is found in the oil pump(atsg page 93).

    ARQ.
     
  6. outlaw612

    outlaw612 1/2 ton status

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    Mine has the hydraulic lockup. I have no complaints about it.
     
  7. arq

    arq 1/2 ton status

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    a few more questions;
    is hydrolic lockup a factory option??
    how can i tell if it was converted??
    does the torque converter change??
    what applications did it come in??

    thanks,

    ARQ.
     
  8. Triaged

    Triaged 1/2 ton status

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  9. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    is hydrolic lockup a factory option?? no

    how can i tell if it was converted?? there is a check ball under the solenoid

    does the torque converter change?? no, it has to be a lock up converter

    what applications did it come in??
     
  10. dyeager535

    dyeager535 1 ton status Premium Member

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    Already responded on the other board, but can comment on the "hydraulic" conversion.

    Buddy had that done to the 700 he put in his Monte SS, and it failed. The TCC is mainly plastic, apparently the check ball installed rides "inside" the plastic, and eventually starts to get stuck, which keeps it locked up more than it should be, which gets old.
     
  11. arq

    arq 1/2 ton status

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    The tranny that i have does not have the solenoid or any of the harness wires. The valve seems to be locked in place. I still need to take it apart, i just need a good day to do it.

    ARQ.
     
  12. Emmettology 101

    Emmettology 101 3/4 ton status

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    the electric harness is for convertor lock-up. Your tranny may have been converted to an old style which is a hydraulic lock-up or have a torque convertor in it that has a modified lock up that requires no electronics.

    I have a friend with the no elec. 700 that was converted from the elec. style.... Seems to work good.
     
  13. dyeager535

    dyeager535 1 ton status Premium Member

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    Look around and see if you can find info on a "non-TCC" 700R4 conversion kit.

    I believe one of the major differences in those non-TCC kits is the input shaft. The TCC trannies have a check ball in the end (the part thats in the converter when in the vehicle) as I understand it. (My 200-4R does, I'd bet the 700 does too)
     
  14. arq

    arq 1/2 ton status

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    i did notice the missing check ball at the end of the input shaft. It seems to be an upgrade for heavy duty applications. There is a retainer that goes along with the check ball, atsg states that the retainer be used.

    I have not found any "good" info on non-tcc conversions for the 700r/4l60. if anyone has one or knows of a good source let me know.

    ARQ.
     
  15. BigBurban350

    BigBurban350 1/2 ton status

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    You need a wiring harness, there are special oil resistant wires inside the tranny.
     
  16. 88Silverado

    88Silverado 1/2 ton status

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    Try this link and give them a call. They're pretty helpful.
    700R4 TCC kit

    BTW, there is a chance you dont have a lock-up converter on that trans. I cant say for a fact it didnt come with one but they can easly be replaced by non-lockup converters. You need to make sure you have a lock-up type.
     

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