[chopper526]

Thanks, Munch. I got a better grasp now. I was not familiar with the 700r4 so I had to do a little quick research. Now I see how it all works together........I like my 400 mechanical linkage

[vette59jdwl]

Chopper 526.  Simple explanation these two GM transmissions.the 200r4 &700r4 There is a cable called a tv cable that goes from the transmission-to a bracket on the top rear of the engine.It is also tied into the fuel injection or the carburetor If not adjusted correctly it will not engage overdrive or will burn out the transmission.vette59jdwl

[chopper526]

Thanks, Vette, that's what I didn't understand. I didn't realize how the trans was tied in with the carburetor. I guess I'm still stuck in the 70's.

[madmike3434]

yes and if your running a 700-r4 or 200-r4 along with a HOLLY carb, you also need a special bracket on the side of the carb that controls the pull angle of the trans cable. 

Apparently there is a specific geometry needed to operate the cables, I am referring here to LOKAR CABLES used with holly carbs.  If you do not use this bracket you most likely will burn out your trans.  Street rodder mag wrote the first article I ever saw on it back in mid 90's...  The bracket was made by ATI transmissions at that time.

You also have to go to W O T pull the trans cable and have it stick 3/16 " beyond the bracket  and tighten the set screw in the stopper , otherwise you will be smoking the trans.   There is one of those brackets on ebay now will post picture.

http://www.ebay.com/itm/181492362249?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT



mike...........................................

[themoose]

I have worked with these transmissions for years and the best way (and as far as I'm concerned the only way) to properly adjust the TV cable is with the use of a pressure gauge. There are now a number of manufactures who market cable systems i.e. brackets and linkage for the OD transmissions but the one that I have always used is from Bowtie Overdrives. They have published extensive information on the subject based on the knowledge that they have gained from working with these transmissions over the years. If you want to read a comprehensive description about how the system works and how to set it up properly take a look at the 3 part post (links below) entitled TV101. If you have one of these OD transmissions it's well worth the read. The TCC lock up is also important on the early 700R4 and 2004R transmissions as they were subject to damage if the lock up system is not working properly. The later transmissions were redesigned and more oil was supplied to critical areas and the problem was eliminated. I believe that there is some information on that subject on Jef Lynches Tech topic.

 Moose

Part1
Part2
Part3

[chopper526]

Man, you guys are giving me a real education. I don't have one of these transmissions but I will read up on them now. I did see that the early ones are trouble. Thanks for the education, I will now prepare for the test.

[62131]

They can be a pain to get right a friend of mine lost three transmission before getting it right, He is now looking at putting fuel injection on his car and will have to change the linkage again.

[chopper526]

I guess I am a little too old school, after I lost the first one I would have put in a 350 or 400

[62131]

I'm using a 350c in my 32 it also has a lock up convertor