T.V Cable, Is This Correct
Thread Starter
Instructor
Joined: Jul 2008
Posts: 211
Likes: 0
From: Cameron NC
T.V Cable, Is This Correct
I have been having problems with my 700R-4 not Shifting, and I am hoping it is the T.V. cable. The T.V. cable almost seems too short to allow WOT. Also, I have read a few things about people having to get a bracket or modify their linkage when using a Holley Carburetor with a 700R-4 transmission. I believe the bracket is called a kickdown bracket. I had a local shop in town install my 383 stroker and carburetor, and I am not sure if they installed the T.V cable correctly onto the carburetor or if that bracket is needed. Can anyone tell me if the geometry of my T.V. cable is correct or not, or if a bracket is needed. I hope the picture is clear enough, let me know if you need a better picture. The Carburetor is a Holley 650 CFM SpreadBore I believe. List # 80555-1. Thank You,
Nathan
Nathan
Last edited by nmaier88; Jul 27, 2008 at 01:02 PM.
Racer
Joined: Jan 2000
Posts: 389
Likes: 1
From: West Point Utah
I'm in the proces of installing a 700R4 from BTO
the sent me a kit that is designed for my 650 Demon
I know the cable should be straight you may want
to check out thier site or get a universal set up from
your local parts store hope this helps
the sent me a kit that is designed for my 650 Demon
I know the cable should be straight you may want
to check out thier site or get a universal set up from
your local parts store hope this helps
Safety Car
Joined: Apr 2000
Posts: 3,802
Likes: 61
From: Wichita KS
The TV cable is adjusted by holding the throttle wide open and pushing in on the button on the side of the cable just behind the bracket.
The cable is spring loaded and that will take up the slack in the cable.
If there is still slack after performing this procedure you may need to look into relocating the bracket.
cc
The cable is spring loaded and that will take up the slack in the cable.
If there is still slack after performing this procedure you may need to look into relocating the bracket.
cc
Thread Starter
Instructor
Joined: Jul 2008
Posts: 211
Likes: 0
From: Cameron NC
The TV cable is adjusted by holding the throttle wide open and pushing in on the button on the side of the cable just behind the bracket.
The cable is spring loaded and that will take up the slack in the cable.
If there is still slack after performing this procedure you may need to look into relocating the bracket.
cc
The cable is spring loaded and that will take up the slack in the cable.
If there is still slack after performing this procedure you may need to look into relocating the bracket.
cc
Nathan
Race Director
Joined: Jul 2004
Posts: 12,690
Likes: 329
From: Scottsdale Arizona
There is a great write up on the BTO web site.
Thread Starter
Instructor
Joined: Jul 2008
Posts: 211
Likes: 0
From: Cameron NC
Do you happen to know if checking the pressure with a gauge is a simple prcedure that does not require any disassembly of the transmission or any other parts of the car? I know it can be pretty tight under these Corvettes.
Thanks,
Nathan
Thanks,
Nathan
Safety Car
Joined: Apr 2000
Posts: 3,802
Likes: 61
From: Wichita KS
My appologies.
cc
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Thread Starter
Instructor
Joined: Jul 2008
Posts: 211
Likes: 0
From: Cameron NC
No worries, I don't think either adjustment is working for me anyhow. After I press the tab and move the slider back, I then rotate the throttle to WOT, but the slider doesn't move back out at all. This is really frsutrating and I am ready to just give up on this transmission and wait until I can put a new one in. Now not only does the T.V. cable not self adjust, and not shift until 4200 RPM's, but whenever I shift into reverse or into drive it acts like it is going to die. This is such a headache.
Nathan
Nathan
Melting Slicks
Joined: Aug 2004
Posts: 2,906
Likes: 228
From: Oakbank Manitoba
Nathan....the solution is to buy the correct 700R4 geometry bracket for your Holley carb. This will bolt on to the "factory" linkage bracket to give you the correct geometry (or pull) that the 700R4 TV plunger requires. Depending on which TV cable you bought you might need to upgrade it too. The different vendors sell these brackets for the different carbs out there. Try www.phoenixtrans.com/html/tvcablekits.html to see what I'm talking about. You must have a geometry correction bracket .....you will never get it adjusted correctly without it. The kit I mentioned (in the link) is complete and a good investment as driving with it way out of adjustment will cause transmission failure very quickly.
Please remember that there are two parts to the solution. #1 is to install the geometry correction bracket to the stock linkage and then #2 is to adjust the cable correctly.
Please remember that there are two parts to the solution. #1 is to install the geometry correction bracket to the stock linkage and then #2 is to adjust the cable correctly.
Last edited by KENS80V; Jul 30, 2008 at 10:42 AM.
Racer
Joined: May 2007
Posts: 370
Likes: 0
From: Cherry Hill N.J.
T.V. Cable
If I am reading your description correctly the reason you can't adjust cable is you are doing it wrong.
Lift black tab on cable behind bracket and then open carb to WOT......
push tab back towards cable while holding carb wide open......that should be the proper adjustment.
Lift black tab on cable behind bracket and then open carb to WOT......
push tab back towards cable while holding carb wide open......that should be the proper adjustment.
Race Director
Joined: Jul 2004
Posts: 12,690
Likes: 329
From: Scottsdale Arizona
Not hard at all, but you need the correct fitting and hose. There are test ports on the side of the transmission that the gauge taps ito. The test is run with the car rolling so you need a hose long enough to put the gauge in the car. I know my Rent All has one.
Thread Starter
Instructor
Joined: Jul 2008
Posts: 211
Likes: 0
From: Cameron NC
Thank You Kens80V, I have been looking for that bracket for about a week now to no avail. I called them up and they said the bracket ought to solve my geometry problems. The only thing I could find was the full T.V. cable system for like $149.99. The stock T.V. cable system is still on the car, and I just needed the bracket.
CA-Legal-Vette thanks, I will go out and get what I need to test the pressure as soon as I get the bracket. You don't happen to know a good website that would show exactly how to do this would you?
BHRIG - Are you sure you are talking about a 700R-4. I don't think that is the correct procedure. Can anyone verify this please?
Thank you all so much,
Nathan
CA-Legal-Vette thanks, I will go out and get what I need to test the pressure as soon as I get the bracket. You don't happen to know a good website that would show exactly how to do this would you?
BHRIG - Are you sure you are talking about a 700R-4. I don't think that is the correct procedure. Can anyone verify this please?
Thank you all so much,
Nathan
Melting Slicks
Joined: Aug 2004
Posts: 2,906
Likes: 228
From: Oakbank Manitoba
The geometry bracket is also available at Jegs and Summit. Your local transmission shops can order them too.
Summit #SUM-700202 (cheapest) or TCI-376715
Jegs #890-376715
Summit #SUM-700202 (cheapest) or TCI-376715
Jegs #890-376715
Last edited by KENS80V; Jul 30, 2008 at 11:20 AM.
