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Externally valving an auto?????

Discussion in 'Questions & Suggestions' started by rodknockerreject, Jan 22, 2004.

  1. rodknockerreject
    Joined: Jan 22, 2004
    Posts: 8

    rodknockerreject
    Member

    I'm looking into trannys 4 my car this spring and I've heard something about externally valving an auto tranny. I will be using a turbo-400. I heard that u use a direct drive or dummy convertor, manual valve body, and a clutch pedal w/ a slave cylinder to cut the pressure. Is this streetable? And if it is what is the cheapest and easiest way of doing it?
     
  2. briggs&strattonChev
    Joined: Feb 20, 2003
    Posts: 2,236

    briggs&strattonChev
    Member

    idk about this tranny situation, but you should post an intro and tell us about yourself and car(s). Some people on here like getting to know new guys before helpin them out.

    Do youself a favor and post an intro

    otherwise, welcome
    Briggs
     
  3. you guys are real bad at this.

    i'll break it down barney style for you....
    step 1. manual valve body: unless you study the logic diagram for a month and can build one out of a stock one, just pay the 150 bucks and buy one
    2. pull apart a converter and weld up all the insides, and make sure they are true. just leave out the stator. you need the input shaft drive, and the pump drive.
    3. find a good spot to tap off all the full line pressure from the pump. the best spot to drill seems to be on the front pump housing itself. drill it and tap it with a pipe tap to the biggest size you can get.
    4. go to fleet farm and buy a some hydraulic hoses and a valve to match. hook the valve to the clutch pedal so that when it's pushed, the valve is open. run the lines from the pump to the valve and back to the pan.

    the end result is when the valve is open, the line pressure drops from a few hundred to zero, leaving all the bands and clutches in the trans disengaged. stick the shifter in first, slowly let out the valve, pressure rises, engages the proper clutches and bands, trans goes into gear. is it streetable? there are people that will tell you that 4.56 gears and 12:1 compression and dual quads and locked out distributors and cheater slicks and mechanical fuel injection aren't streetable too. four-thirteen
     

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