The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-02-2011, 12:28 AM   #1
willstruck
Registered User
 
Join Date: Jan 2011
Location: Auburn, WA
Posts: 87
tv cable, carb spacer

So, my truck was kicking down a gear going up hill kinda early in my opinion. Put in a 2" carb spacer, now it kicks down with hardly any pressure on the accelerator. So, I looked up the procedure for adjusting the tv cable, but couldn't find what tab you pull out before you open the throttle. Nothing I found online made sense with what I had going on. This morning, I was going up a hill, it kept kicking down a gear, and shifting back up. Figured if I floored it, at least it would stay in the lower gear and make it up the hill. Just kept dropping down, and shifting back up. Any tips on adjusting this?
__________________
'85 k10 long bed, 6" lift. 35" tires. 350, Edelbrock intake/carb, headers, dual exhaust. Automatic.
willstruck is offline   Reply With Quote
Old 06-02-2011, 12:39 AM   #2
Togart
Registered User
 
Togart's Avatar
 
Join Date: Dec 2009
Location: Rochester, MN
Posts: 43
Re: tv cable, carb spacer

Is it a TH350 or 700-R4? If it is a 350, there is a clip that pops up right behind the bracket if you press from underneath. If it is a 700-R4, there is a D-shaped pad on the bottom that you press and hold while moving the throttle to WOT.
__________________
Togart

'66 GMC 1500
'77 C-10 Scottsdale Big 10
Togart is offline   Reply With Quote
Old 06-02-2011, 12:41 AM   #3
willstruck
Registered User
 
Join Date: Jan 2011
Location: Auburn, WA
Posts: 87
Re: tv cable, carb spacer

Thanks. Not sure which it is. Truck came with 4 speed according to build tag. I'll check if it has the clip or the pad, thanks.
__________________
'85 k10 long bed, 6" lift. 35" tires. 350, Edelbrock intake/carb, headers, dual exhaust. Automatic.
willstruck is offline   Reply With Quote
Old 06-02-2011, 12:41 AM   #4
lindstromjd
Gentleman Jim owner x2
 
lindstromjd's Avatar
 
Join Date: Oct 2010
Location: West Des Moines, IA
Posts: 464
Re: tv cable, carb spacer

It's a "button" of sorts on the 700r4 that looks like a capital D. Push it in and hold it. Push the nose of the TV cable all the way towards the firewall. Let go of the D button. Get inside your truck, and put the throttle to the floor. You should hear some clicks, and that will set it.

All of that with the engine off, of course. Have to say it... because you know some people will try it the other way around.

Looks like we all jumped on that one pretty quick...
__________________
1975 GMC Gentleman Jim #1
-357 / 700r4
1975 GMC Gentleman Jim #2
-350 / TH350

Last edited by lindstromjd; 06-02-2011 at 12:43 AM.
lindstromjd is offline   Reply With Quote
Old 06-02-2011, 12:49 AM   #5
willstruck
Registered User
 
Join Date: Jan 2011
Location: Auburn, WA
Posts: 87
Re: tv cable, carb spacer

I can't find a clip or a D shaped button to push. Since the tranny isn't original, it had a manual, what other options could the cable be?
__________________
'85 k10 long bed, 6" lift. 35" tires. 350, Edelbrock intake/carb, headers, dual exhaust. Automatic.
willstruck is offline   Reply With Quote
Old 06-02-2011, 11:07 AM   #6
lindstromjd
Gentleman Jim owner x2
 
lindstromjd's Avatar
 
Join Date: Oct 2010
Location: West Des Moines, IA
Posts: 464
Re: tv cable, carb spacer

Really need to know if it's a TH350 or a 700r4. Or at least some pix of what you're working with?
__________________
1975 GMC Gentleman Jim #1
-357 / 700r4
1975 GMC Gentleman Jim #2
-350 / TH350
lindstromjd is offline   Reply With Quote
Old 06-02-2011, 03:10 PM   #7
willstruck
Registered User
 
Join Date: Jan 2011
Location: Auburn, WA
Posts: 87
Re: tv cable, carb spacer

How do you tell which tranny it is?
Posted via Mobile Device
__________________
'85 k10 long bed, 6" lift. 35" tires. 350, Edelbrock intake/carb, headers, dual exhaust. Automatic.
willstruck is offline   Reply With Quote
Old 06-02-2011, 04:08 PM   #8
lindstromjd
Gentleman Jim owner x2
 
lindstromjd's Avatar
 
Join Date: Oct 2010
Location: West Des Moines, IA
Posts: 464
Re: tv cable, carb spacer

Easy way is look at the pan. Does it look like a big square? Or does it look like a square with a corner cut off it at an angle?
__________________
1975 GMC Gentleman Jim #1
-357 / 700r4
1975 GMC Gentleman Jim #2
-350 / TH350
lindstromjd is offline   Reply With Quote
Old 06-03-2011, 07:36 AM   #9
cr34t3d_by_d4rkd3n
Account Suspended
 
Join Date: Jan 2011
Location: Allen, TX
Posts: 188
Re: tv cable, carb spacer

Quote:
Originally Posted by willstruck View Post
So, my truck was kicking down a gear going up hill kinda early in my opinion. Put in a 2" carb spacer, now it kicks down with hardly any pressure on the accelerator. So, I looked up the procedure for adjusting the tv cable, but couldn't find what tab you pull out before you open the throttle. Nothing I found online made sense with what I had going on. This morning, I was going up a hill, it kept kicking down a gear, and shifting back up. Figured if I floored it, at least it would stay in the lower gear and make it up the hill. Just kept dropping down, and shifting back up. Any tips on adjusting this?
ever owned a bicycle? ever had to adjust the brake cable? same concept im sure. never adjusted one before, just follow the cable down to the transmission and take a look see.... but dont drive that truck without the trans cable connected. it will not supply adequate hydraulic pressure and can torch a transmission... adjust the linkage before you either blow it up from popping around the gears at high speeds or not connecting the cable and smoking a tranny.....
cr34t3d_by_d4rkd3n is offline   Reply With Quote
Old 06-03-2011, 10:30 AM   #10
lindstromjd
Gentleman Jim owner x2
 
lindstromjd's Avatar
 
Join Date: Oct 2010
Location: West Des Moines, IA
Posts: 464
Re: tv cable, carb spacer

Quote:
Originally Posted by cr34t3d_by_d4rkd3n View Post
ever owned a bicycle? ever had to adjust the brake cable? same concept im sure. never adjusted one before, just follow the cable down to the transmission and take a look see.... but dont drive that truck without the trans cable connected. it will not supply adequate hydraulic pressure and can torch a transmission... adjust the linkage before you either blow it up from popping around the gears at high speeds or not connecting the cable and smoking a tranny.....
He's got a TH350... not a 700r4. That thing will survive forever without the kickdown cable attached. Nothing to be concerned about. I had one behind my 6.2 diesel before I swapped it out for the 700r4, and I drove it for over 2000 miles without the kickdown attached.

Anyway, if you do get a chance to snap a picture of what your cable looks like, someone should be able to figure out how to adjust it.
__________________
1975 GMC Gentleman Jim #1
-357 / 700r4
1975 GMC Gentleman Jim #2
-350 / TH350

Last edited by lindstromjd; 06-03-2011 at 10:30 AM.
lindstromjd is offline   Reply With Quote
Old 06-04-2011, 01:21 AM   #11
cr34t3d_by_d4rkd3n
Account Suspended
 
Join Date: Jan 2011
Location: Allen, TX
Posts: 188
Re: tv cable, carb spacer

Quote:
Originally Posted by lindstromjd View Post
He's got a TH350... not a 700r4. That thing will survive forever without the kickdown cable attached. Nothing to be concerned about. I had one behind my 6.2 diesel before I swapped it out for the 700r4, and I drove it for over 2000 miles without the kickdown attached.

Anyway, if you do get a chance to snap a picture of what your cable looks like, someone should be able to figure out how to adjust it.
th350 adjust's pump pressure via the kick down cable's pulled position, a disconnected kick down cable will show an"at idle" condition constantly.
do ur hw before u give people the ol "eahhhhh u dont need this! extra parts!!"
cr34t3d_by_d4rkd3n is offline   Reply With Quote
Old 06-04-2011, 10:36 AM   #12
Togart
Registered User
 
Togart's Avatar
 
Join Date: Dec 2009
Location: Rochester, MN
Posts: 43
Re: tv cable, carb spacer

Quote:
Originally Posted by cr34t3d_by_d4rkd3n View Post
th350 adjust's pump pressure via the kick down cable's pulled position, a disconnected kick down cable will show an"at idle" condition constantly.
do ur hw before u give people the ol "eahhhhh u dont need this! extra parts!!"
Thats how a 700-R4 functions. The TH350 uses a vacuum modulator instead and the cable is just for kickdown.
__________________
Togart

'66 GMC 1500
'77 C-10 Scottsdale Big 10
Togart is offline   Reply With Quote
Old 06-04-2011, 11:34 AM   #13
fanmanj
Registered User
 
fanmanj's Avatar
 
Join Date: May 2011
Location: Thibodaux, LA
Posts: 114
Re: tv cable, carb spacer


Posted via Mobile Device
__________________
Jay Bernard, Thibodaux, LA
1986 SWB Sierra Classic
Stock roller 350/700R4
2008 Buick Enclave CXL
3.6 VVT, 6spd auto.
PAINFULLY stock... (wife's ride)
fanmanj is offline   Reply With Quote
Old 06-05-2011, 12:40 PM   #14
lindstromjd
Gentleman Jim owner x2
 
lindstromjd's Avatar
 
Join Date: Oct 2010
Location: West Des Moines, IA
Posts: 464
Re: tv cable, carb spacer

Quote:
Originally Posted by cr34t3d_by_d4rkd3n View Post
th350 adjust's pump pressure via the kick down cable's pulled position, a disconnected kick down cable will show an"at idle" condition constantly.
do ur hw before u give people the ol "eahhhhh u dont need this! extra parts!!"
Quote:
Originally Posted by Togart View Post
Thats how a 700-R4 functions. The TH350 uses a vacuum modulator instead and the cable is just for kickdown.
Quote:
Originally Posted by fanmanj View Post

Posted via Mobile Device
Thanks for the backup guys. Do your own homework when it comes to transmissions. That's why I put the explanation of WHY it isn't necessary when I said that you can drive without it connected. You think a TH350 would survive for over 2000 miles without the kickdown attached if it depended on it like the 700r4 does with the TV cable? Prove to me why I was able to do that then. All the kickdown does on a TH350 is open up extra valves when you "floor the throttle" to create more pressure to get the transmission to downshift. At normal throttle position, it isn't doing anything for the transmission. It is not necessary AT ALL to everyday driving operations. I know the differences between the two transmissions. End rant.
__________________
1975 GMC Gentleman Jim #1
-357 / 700r4
1975 GMC Gentleman Jim #2
-350 / TH350
lindstromjd is offline   Reply With Quote
Old 06-04-2011, 05:25 AM   #15
BamaDave
Registered User
 
Join Date: May 2010
Location: Shoals, AL
Posts: 299
Re: tv cable, carb spacer

I am interested in this also. I just bought a spacer to put under my Holley. It is only a little over 1/2". Will I have to adjust the kick?
BamaDave is offline   Reply With Quote
Old 06-05-2011, 12:49 PM   #16
rayfinseats
Registered User
 
Join Date: Dec 2010
Location: sioux city, iowa
Posts: 619
Re: tv cable, carb spacer

"TH350 won't destroy itself with the kickdown off like the 700r4 will with the tv cable off."

If it is a 700r4 and the cable isn't adjusted right you'll be buying a new transmission.
rayfinseats is offline   Reply With Quote
Old 06-05-2011, 01:43 PM   #17
willstruck
Registered User
 
Join Date: Jan 2011
Location: Auburn, WA
Posts: 87
Re: tv cable, carb spacer

I think a previous owner converted it to automatic, so the kickdown cable wouldn't have been there before. Who knows what it came off of...
__________________
'85 k10 long bed, 6" lift. 35" tires. 350, Edelbrock intake/carb, headers, dual exhaust. Automatic.
willstruck is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:00 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com