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87 Sub. VSS?

Discussion in 'The Garage' started by Tux, Jan 14, 2006.

  1. Tux

    Tux Registered Member

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    I am putting a np203 behind a 700r4, unfortunately I do not have the original tcase to determine if it is supposed to have a vss. The engine is a tbi 350. If it requires a vss hooked to tcase anyone have an idea how i can accomplish this installation with out the factory tcase?
     
  2. eblick

    eblick 1/2 ton status

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    Not too sure about your model but I have a 241 behind my 700r4 and the vehicle speed sensor runs off my spedometer in the dashboard with some sort of sensor mounted there.
     
  3. sandawgk5

    sandawgk5 3/4 ton status

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    Your VSS is run off of a reflector and light on the back of the speedometer inside the dash. Hooking up your speedo gears is just like any other vehicle with a drive gear a driven gear and a speedo cable to the back of the Speedo.

    Ira
     
  4. sandawgk5

    sandawgk5 3/4 ton status

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    I want to say that 1989 is when they went to a reluctor ring and electronic speedo with a drac to provide a vss signal to the ECM.

    Ira
     
  5. Tux

    Tux Registered Member

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    Thanks for the information, I was worried about having to buy a different tcase.
     
  6. sandawgk5

    sandawgk5 3/4 ton status

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    Na you would never have to buy a new Tcase. Jagsthatrun sells a signal generator that runs off of the standard speedo gear in the transmission but sends the electronic signal to feed the ecm and electronic speedo.

    Ira
     
  7. Tux

    Tux Registered Member

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    thats good to know as well
     

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