tranny question 700r4 automatic
Thread Starter
Instructor
Joined: Nov 2008
Posts: 170
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From: Odessa Tx
tranny question 700r4 automatic
I have an 85 model and I am going to go from fuel injection to a carburetor. My question is this: What do I need to do to the 700r4 transmission to make it shift right since the computer will not be hooked up? Any advise would be appreciated!
Melting Slicks
Joined: May 2007
Posts: 2,171
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From: Warwick RI
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
There is no kickdown cable on a T700.
The TV (throtle valve ) cable controls all trans operation which is why it must be set up and adjusted correctly; otherwise as stated bye bye trans.
The lock can be done with a manual switch ( which you have to remember to turn on/ off ) or a 4th gear pressure switch inside trans which engages lockup automatically when in 4th gear only
The TV (throtle valve ) cable controls all trans operation which is why it must be set up and adjusted correctly; otherwise as stated bye bye trans.
The lock can be done with a manual switch ( which you have to remember to turn on/ off ) or a 4th gear pressure switch inside trans which engages lockup automatically when in 4th gear only
Pro
Joined: Jan 2008
Posts: 584
Likes: 1
From: Near Lockport NY Black 1986 Coupe
If you need further info on the setup, I can snap a couple pictures of my carb setup so you know what it should look like.
The tranny will shift properly in all gears, but the torque converter just won't lock up. I have yet to get a lock-up kit but, in the autumn air, my tranny never overheated.
The tranny will shift properly in all gears, but the torque converter just won't lock up. I have yet to get a lock-up kit but, in the autumn air, my tranny never overheated.
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
Contact the company of whatever brand carb you are going to use, they will advise you which two pieces you will need to make this work. I did this on my '87 El Camino daily driver to get rid of the worthless Quadrajet and the computer, I'm getting 24 mpg on a 305 with a Holley 600 carb. I also had adjustment problems with the Holley pieces so when I ordered the converter lockup kit from Raptor they advised me to do the usual tv setting procedure then add two more clicks out on the cable. I've put about 5000 miles on the car with no trans problems.
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Instructor
Joined: Jun 2005
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From: Ringgold Georgia
Bow Tie Overdrives make an adapter that works well. Their stuff is first rate. I have a switch to lock my converter. With a legitimate 3800 stall you need the lock up. I only use it when I am on the freeway or chassis dyno. I had this done when I had my trans built so I am not sure how to do it.