Simple question (I think) about 700R-4

[SummitXMK]

What year did they go to the computer contolled. I need one for an 88 S 10 and want to make sure I don't get one that won't work. The 88 was vacum controlled right?

 

[1Blazin71]

I dont think any 700R4 was computer controlled. The 460LE is the computer controlled equivalent of the 700R4.

There's no vacum control involved for a 700R4 either, to the best of my knowledge. Everything (except for lockup of the converter) is controlled by the Throttle Valve cable on a 700.

 

[SummitXMK]

oops my bad!! Ya that dang TV cable. don't forget to hook that up correctly!!

 

[ntaj*ep]

The lock-up of the torque converter was controlled by the engine ECU. I'm not sure the early ones were or not. I just used a kit to jump the lock-up in the trans. I use a vac. switch, and a brake switch to control the lock-up. I also have a toggle switch to turn it on and off. Very cool for wheelin'.

 

[SummitXMK]

The donar trans came out of a 90 and its going into an 88 so I don't think that there will be much of an issue as far as the whole torque converter issue. On the other hand who would you use to ship the tranny from Ohio?

 

[1979Jimmy]

fORWARD AIR OR A SIMIALR SERVICE

 

[cegusman]

What do you get when you are able to lock it and unlock it?

 

[rampage]

Better mileage and less slipage (which also reduces heat).

 

[91K5]

They went computer controlled in 1993, and renamed as the 4L60E. From 82-92 they're all the same thing, but the later ones are better as they got the bugs out of the earlier ones.

 

[ntaj*ep]

No torque converter slippage. Very cool, you don't get the "theortical" torque multyplication but you do get a solid coupling to the engine. On the road you get better MPG, and cooler running.

 

[Blazinaire]

You will still have the "theoretical" torque mutiplication at slower speeds, so it is still good for crawlin' and what not, just no slippage at highway speeds (or whenever the TC is locked up.)