Hello,

I am at the very beginning of doing a tranny swap in my Camaro. Here is a short history:

2.8 Fuel Injected V6 w/ 700-R4 ==> 5.7 Carb'ed V8 w/ TH350 and no ECM

I am now at the point where I REALLY miss my overdrive. So I picked up a 1986 Caprice because it will either have a 200-4R or 700-R4; I have yet to verify.

My question: Will the ECM in the Caprice properly control the torque converter lockup if I transplant the transmission into my Camaro? If there are follow-up questions let me know and I will answer. Didn't want to be too windy.

 

the transmission will not lock up if you're just adding an ecm; the ecm needs to be hooked up the engine side as well to properly work. there are other conversion kits you can buy to allow a 700r4 to lock-up without the factory computer. check out ebay, jegs, etc.

take a look at this thread for a bit more info:
https://www.thirdgen.org/forums/tran...run-700r4.html

 

Do you know what else the computer would need from the engine? Why wouldn't it be able to lockup the tc? Is it because no other sensors are hooked up?

 

Are you removing the TH350 and installing the OD trans behind the carb engine ? If so there many lockup kits made to do this. Or you can piece together your own. Search and you should find the info. And no, the ECM will not control lockup without the sensors .

 

Also something I forgot to mention, and I know it wasn't your question but thought you needed to know. On a OD trans, the TV cable MUST be PROPERLY installed and adjusted. Pull ratio on the cable MUST br perfect. This controls line pressure, and without correct pressure the trans WILL fail quickly. I presonally have saw more than one 700r4 burned up from improper installation of the TV cable on a carb.