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Trany Slip on 700R4???

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 1986Blazer, Oct 16, 2001.

  1. 1986Blazer

    1986Blazer 1/2 ton status

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    This may be the same problem most other people have but I want to give my symptoms to see what everyone thinks.

    I have a 700R4 Crate Tranny - ever since I have had it in the Blazer (about 5,000 miles) it has slipped at low speeds between 2nd and 3rd (I think those are the gears - I am usually traveling about 15-25 mph). It also sometime happens as I finish taking a 90 degree turn to the right and hit the gas.

    Is this the same problem most 700R4's have and is the solution one of those shift kits?

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    make sure the TV cable is set right. (do a search on yahoo for 700 adjustments) One of the "tricks" I know people do is bump the cable "tighter" one or two notches, so that the shifts firm up. Gotta be real careful though, TV is critical.

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
    No anti-theft measures on your truck? No pity when its stolen
     
  3. 1986Blazer

    1986Blazer 1/2 ton status

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    I thought the TV was only on TBI engines. Mine is a 350 Carburated. The only cable I have is the kickdown cable and from my understanding that is only for droping down to accelerate. Please correct me if I am wrong.

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     
  4. jcg

    jcg 1/2 ton status

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  5. dyeager535

    dyeager535 1 ton status Premium Member

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    TV=Throttle Valve
    Detent (Kickdown)=changes gears when the throttle is floored

    TV, for lack of knowing exactly how it works, controls how much fluid pressure the various internals get...shifting, etc.

    Its Throttle Valve, because the pressure varies depending on how far the throttle is depressed. EVERY 700-R4 has one, as does EVERY 200-4R. TH350/C is the only common GM auto trans to have a kickdown cable. Everything else is either electrical or TV. (that I know of)

    Probably do yourself good to go check out some Camaro sites that deal with this. I assume its the same setup as the 200-4R (and the Buick GN sites are excellent for TV info) but since you have a 700, stick with info from cars that have the 700's, like the 80's Camaros.

    Dorian
    My tech/links page: &lt;a target="_blank" href=http://www.dorianyeager.com/index2.html&gt;http://www.dorianyeager.com/index2.html&lt;/a&gt;
    No anti-theft measures on your truck? No pity when its stolen
     
  6. 84_Chevy_K10

    84_Chevy_K10 Banned

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    All TH 350s have kickdown cables as far as I know. They use a vacuum modulator for shifting.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    Yeah, the "TH350/C" was supposed to indicate both variants : ) (which of course are TH350 non lockup converter, and TH350C, lockup converter)

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
    No anti-theft measures on your truck? No pity when its stolen
     

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