700r4 overdrive hook up, how to wire a switch to lock up the torque converter on a r transmission

No first hand experience mind you, but it does kinda make sense. Consult your speedometer manufacturer for its recommended solution. This bracket is typically mounted to the engines intake manifold. Failure to get the adjustment right will eventually burn up the transmission due to insufficient line pressure.

Wiring a Lockup-Converter Pressure Switch

This red wire will also require a female spade connector. They look different so it is confusing to some. Since writing this article, I've had a lot of inquiries about it.

How to Wire a Switch to Lock Up the Torque Converter on a R Transmission

  1. If you don't use the engine ported vacuum switch then the wire from terminal D should be grounded at all times.
  2. Have a helper depress the accelerator pedal all the way and hold it there.
  3. Watch how this happens in the following pictures.
  4. You can go a click or two on the adjuster either way from here, but no more.
  5. Many times this is caused by overheating the transmission.

THR4 Lockup Converter

It Still Runs
How does a 700R4 work
  • Route this wire through the rubber grommet in the firewall and down to the transmission.
  • The only fix is to rebuild the transmission or replace it with a re-manufactured unit.
  • Orange arrow above picture.

The transmission has the following dimensions and gear ratios Case to ext Housing. This is untested, but I see no reason why it won't work. The following drawing shows the geometry for the cable connection to the carb. Start engine and allow to go Closed Loop. This eliminates the need for a manual switch.

Return to Sumner's Home Page. Here is a list of things to look for when considering buying a car with this transmission. After calling around to all the big name transmission companies that advertise in the magazines and anyone else I could find I came up with nothing.

3x2 to 700r4 TV hook up

If they aren't right it is going to be hard to get the transmission to shift right under all load combinations and you sooner or later you will be fixing the transmission. The factory installed a couple of different types of pressure switches depending on the application. Will the tranny clear the headers? Before checking minimum idle speed be sure the ignition timing is correct and, be sure the throttle body is clean around the throttle plates.

You will need to install a female spade connector on the end of the black wire and run that wire to the new pressure switch photo B. Our company highly recommends that our customers allow us to stay closely involved all the way through the installation, set up test driving and warranty authorization. Shown at left in the fully extended and fully depressed positions. Install the new filter into the transmission by gently pushing up on it. The oil also offers proven protection for critical engine parts, dating apps as well as overall lubrication and wear protection covering all driving styles.

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These photos were taken from a Chevy High Performance magazine article, not by me, well except for the last one, photo D, which I did take. Tighten screws, then recheck reading to insure adjustment has not changed. It only had one pressure switch. This shows the sheared off splines.

You don't really have to use the delay valve, but I already had it so why not? Who knows what's in the converter. We will not spend time in this article discussing hydraulic pre load because it will just confuse the issue.

R4 lockup kit

You see the two terminals that you need to hook to. Now hook the cable back up, with the adjuster out towards the carb. The idle stop screw is used to regulate the minimum idle speed of the engine.

The cancel switch is mounted on a bracket under the dash. This does effect their relative starting positions so our pictures and illustrations are positioned as they would be in the valve body when it's operating. Put on safety glasses and place a large drain pan under the transmission pan. White arrow above picture.

How does a R4 work


It is very important to set up the Throttle Valve T. The wiring diagram shown is how I wired my car. Now again, with so many different variations of these things, online dating sites in you may also have a single wire solenoid.

Set it for full pull on the cable is full throttle on the carb. Mount the low-vac switch on the firewall beside the master cylinder, right by the plastic sleeve with all the vacuum hoses going through it. We do this so our customers can feel very comfortable with getting this transmissions installed correctly.

My motor turns on at rpm and I like to shift at rpm for first to second and rpm for second to third. There are various home-brewed ways to accomplish this, but due to detailed differences through the years, such schemes may not be applicable to every model. Secure all gauge wire to the vehicle with zip ties to prevent any hanging wire. The governor has a tendency to stick.

Some of these problems are minor but some can shorten the life of the transmission dramatically! This is how I did my inline and have miles on it with no problem. Took me faster than it takes to type this, to do the cable adjustment. The front seal is a whole different story.

R4 TCC/lockup wiring - The Forums

3x2 to r4 TV hook up

R4 Transmission Swap

This drum is a splined piece that connects to the input shaft. Will the tranny will fit in the car? Why, I don't know, but they did.

The blue, or in some applications dark green, wire terminal B is connected to the fourth gear overdrive switch in the valve body. Peek under a hot rod today and it's not uncommon to find an automatic overdrive resting between the frame rails. With out the proper turning radius at this hook-up point, the transmision will never operate properly.

R4 myths Archive

The pictures are of the aluminum input drum. You need the low-vac switch so the converter will unlock in low vacuum situations, taylor swift dating snoop such as going up hill and heavy throttle. This can only be determined by the installer. This is potentially a very dangerous condition that can lead to rapid clutch failure.

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