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Old 04-25-2004, 07:09 PM
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700 r4 wiring

Can any one point me to a 700 r4 with converter lock-up wiring diagram 1985 model
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Old 04-27-2004, 08:12 AM
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There are some variations on the wire harness depending on the model of vehicle of the same year.

I am sure there is some diagrams some where on the net, I've never found them though.
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Old 04-27-2004, 06:02 PM
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Quote:
Originally posted by Crosley
There are some variations on the wire harness depending on the model of vehicle of the same year.

I am sure there is some diagrams some where on the net, I've never found them though.
Well I tend to agree there should be diagrams But where are they.
I disassembled the 700 r4 I have its a late model 84 (30 spline) it looks nothing like I have seen. it has a tcc solenoid and 4th gear switch wired together. but then has a separate switch with a single wire back to the external connector?
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Old 04-28-2004, 08:21 AM
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the 30 spline input shaft was a mid year 1985 addition from GM.

Depending on what you are doing with the 700 you may have options for the converter lock up control in OD only .
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Old 04-29-2004, 03:22 PM
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I had a TCI rewiring kit for the 700 that I had in my 55. I'll hunt for the diagrams that came with it. I'm sure they are around the house somewhere. From what I recall, the lock up is a switched negative feed, not +12 volts. The kit I bought came with a vaccum switch to unlock the converter when you were on the throttle but I never could get it calibrated right. Ended up installing a manual lock switch as well as having it automatically lock up in 4th.
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Old 04-30-2004, 03:33 AM
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Thanks dmc12mk3

Would like to see the diagrams if you can find them.
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Old 04-30-2004, 06:14 AM
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If you need some info on 4th gear lock up only and TV cable setup visit this site:

http://purplesagetradingpost.com/sum...o/700R4p1.html


From your first post I got the idea you wanted an OEM wire setup which is not needed in custom installation of a 700r4 / 4l60
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Old 04-30-2004, 08:52 AM
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Thanks Crosley

Thats is exactly what I was looking for, answered all of the questions I had.

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Old 04-30-2004, 04:14 PM
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I thank you too...thats a really handy page. (I'm a big fan of the 700r4's when a third pedal isn't an option)
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Old 04-30-2004, 06:25 PM
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Cool

good to hear the page helped.

I helped the guy that owns the web pages with technical & photo stuff on the 700
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Old 05-17-2004, 08:19 PM
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Just wanted to thank every one again for the help. I have the 700 r4 installed now behind a supercharged small block 350. From the wiring diag I found with your help, I wired from the trans 4th gear switch N.O. contacts back to the heat sensor N.C. contacks thru the tcc solenoid out of the trans thru a N.C. contacks of the break switch to switched 12V supply. Thus allowing the converter to lockup in 4th gear..and releases when break is applied. It works like the factory designed it. I replaced my break light switch with one from a 1985 impala. it has both N.O and N.C contacts one for the break lights and one for the tcc control.

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Old 05-17-2004, 08:48 PM
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700r4 install

ok im dumb on this subject, how the heck do i install a 700r4 lockup in my 94 s10, i bought the transmission and had it rebuilt, now there is electrical outlet on the tranny and im like whaa??? any help on these transmissions would be helpful and welcome...

Last edited by M&M CUSTOM; 05-18-2004 at 03:05 PM.
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Old 05-18-2004, 07:15 PM
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Re: 700r4 install

Quote:
Originally posted by traub83
ok im dumb on this subject, how the heck do i install a 700r4 lockup in my 94 s10, i bought the transmission and had it rebuilt, now there is electrical outlet on the tranny and im like whaa??? any help on these transmissions would be helpful and welcome...

See the links above for wiring options...What year is the 700 r4 the 700 r4 I installed has three connectors in a square four connector plug. I just went down to my local chevy dealer and bought the male plug for car of the same year. My tranny had 1 lead to the internal, 4th gear switch, 1 lead to the internal over heat sensor, and 1 lead to the internal lockup solenoid. I connected the 4th gear connector wire to the internal overheat sensor wire. and then connected the lockup solenoid wire thru a normally closed contact of a break light switch which I also got from chevy, for the same year car as the tranny. I ran the other side of the normally closed break light switch to a switched 12 vote supply controlled by the ignition switch.

This way the lockup is off until the car is started and has shifted to 4th gear. It also releases the lockup any time I step on the break.

I hope this helps.

I also have found that the shift linkage and the TV cable adjustments are very critical for proper operation of this transmission, the has been a pain but the results and the performance was well worth the work involved. It has the best of both worlds ...the 3:1 low gear for good 60 ft times, and an overdrive with a lockup converter to get every mile you can out of this $2 a gallon gas.

Last edited by iburke; 05-18-2004 at 07:15 PM.
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