Transmissions and Drivetrain Need help with your trans? Problems with your axle?

setting tv cable by using line pressure

Old Oct 15, 2007 | 03:38 PM
  #1  
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From: Fairfield, CA
Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
setting tv cable by using line pressure

ok i am wanting to set the tv cable using a gauge connected to the pressure port on the tranny. what should the pressure be in each gear, netrual, and any other settings that are used. i am going to get a gauge with hose so i will be able to do this. last time i took it to the shop and they charged me 200 dollars. so if anyone has a link or anything to tell me how to do this i would be greatfull. thanks for the help. -jon
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Old Oct 15, 2007 | 04:12 PM
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Re: setting tv cable by using line pressure

That's not how it's done. Sounds like somebody took advantage of you.

http://www.tvmadeez.com/article/index.php
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Old Oct 15, 2007 | 06:08 PM
  #3  
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From: Tallahassee, Florida
Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: setting tv cable by using line pressure

X2. Its set ONLY one way. But, it is good to verify the line pressure of the TV action, which can be done with that gague and pulling the TV out to verify the line rise. The link above will explain that. Also having an assistant and verifying the pressures in gear too. Definately do that...but ONLY reset the TV properly.
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Old Oct 16, 2007 | 08:23 AM
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Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
Re: setting tv cable by using line pressure

ok so i tried to "set" it, didn't click any so i spaced it out, i got it so it will ratchet out but now the shifts into gear very hard. almost to the point where it will stall it. would that mean that there is too much pressure? this is all after i swapped from tbi to carb if that makes a difference, using the tbi cable.
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Old Oct 16, 2007 | 09:17 AM
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Re: setting tv cable by using line pressure

Did you get the right linkage piece for the carb?

As you no doubt now know from reading and fully comprehending the article, it is ABSOLUTELY CRITICAL that the cable reach its FULL TRAVEL, from idle to WOT. Most of the time, the linkage that comes on carbs, ISN'T set up for that. It doesn't move the cable NEAR far enough (stud too close to the throttle shaft), such that if you set it by the factory method, it's already 2/3 pulled out at idle.

Meaning, pressure gauges or no, no possible setting will EVER make it work right, if that relationship is not right.

Go get the right little linkage piece thing for your carb. Makes all the difference in the world. The Edelbrock one might even fit it, might save you some trouble finding it if it does.
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Old Oct 16, 2007 | 07:47 PM
  #6  
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From: Decatur Texas
Engine: 355
Transmission: 700r4
Axle/Gears: 3.73 Trutrac
Re: setting tv cable by using line pressure

Originally Posted by 91 camaro racer
ok i am wanting to set the tv cable using a gauge connected to the pressure port on the tranny. what should the pressure be in each gear, netrual, and any other settings that are used. i am going to get a gauge with hose so i will be able to do this. last time i took it to the shop and they charged me 200 dollars. so if anyone has a link or anything to tell me how to do this i would be greatfull. thanks for the help. -jon
Adjusting the TV cable through the line pressure port IS the correct way to adjust the TV cable. The ASTG manual specifies that and the Min. and Max. PSI's that is required in each position. I adjusted my cable exactly as TVMadeEZ stated. My tranny shifted hard all the way through 3rd. Thinking something is not right with the hard shifting is what led me to do the line pressure port reading to see where it was as far as positioning of the TV Cable. The TV cable was WAYYYYY off ( too far in ). The gauge showed that in park I still had high line pressure. There shouldn't be high line pressure in park. In layman's terms, my transmission was still in gear while it was in park.
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Old Oct 16, 2007 | 11:11 PM
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Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
Re: setting tv cable by using line pressure

Originally Posted by TUNGSTEN
Adjusting the TV cable through the line pressure port IS the correct way to adjust the TV cable. The ASTG manual specifies that and the Min. and Max. PSI's that is required in each position. I adjusted my cable exactly as TVMadeEZ stated. My tranny shifted hard all the way through 3rd. Thinking something is not right with the hard shifting is what led me to do the line pressure port reading to see where it was as far as positioning of the TV Cable. The TV cable was WAYYYYY off ( too far in ). The gauge showed that in park I still had high line pressure. There shouldn't be high line pressure in park. In layman's terms, my transmission was still in gear while it was in park.
well do you still have the manual that tells the pressures? if so could you list them?
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Old Oct 17, 2007 | 12:01 AM
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From: Tallahassee, Florida
Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: setting tv cable by using line pressure

1st off you need the correct brackets for the carb setup. This gives you the proper range of starting point and the proper range of travel. If you 'reset' it back in and it didnt ratchet out on its own, then you have the starting point too far forward. Your attempt is to bottom the TV plunger out in the tranny at WOT (wide open throttle). This causes the ratcheting out at WOT. Just pulling it out some will do nothing more than f*ck up the line pressures at idle and such. Thats why your pressure is high in park. You need to start with the proper 'reset' and 'WOT' setting. If it doesnt ratchet out BY ITSELF, then you NEED to address the right problem. Your brackets. What carb and manifold?
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Old Oct 17, 2007 | 12:08 AM
  #9  
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From: Tallahassee, Florida
Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: setting tv cable by using line pressure

Oh BTW Pressures It depends on your tranny model. Do you have the ID off the side? That will help. Here is the overall ranges for right now.
TV@minimum : all at 1000RPM
Rev = 84-148
Lo and 2nd = 163-226
Pk Neu 3rd OD = 65-90
TV@maximun : all at 1000RPM
Rev = 157-323
Lo and 2nd = 183-226
Pk Neu 3rd OD = 123-196
Keep in mind these are overall ranges. Like if you have model xxx they are closer ranges. There are about 10 different ranges pertaining to the exact model.
The ID is on the right rear just above the pan line. Its etched into a flat boss there. Get the whole ID, post it and someone can decose it for ya.
Hope this helps. You really want to do this correctly. Trust me on that =)
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Old Oct 17, 2007 | 01:38 AM
  #10  
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From: Fairfield, CA
Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
Re: setting tv cable by using line pressure

i will have to look at the id number when i get time. as for the carb and intake i am using an edelbrock 1406 and an edelbrock performer rpm intake
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Old Oct 18, 2007 | 01:12 AM
  #11  
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From: Tallahassee, Florida
Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: setting tv cable by using line pressure

Edelbrock and Holley make brackets to accomidate. I would get the Edel ones. They are the correct geometry fot that setup. Go from there with the reset procedure
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Old Oct 18, 2007 | 01:22 AM
  #12  
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From: North Carolina(but you'll never take the DC out of me!!!)
Car: '91 Formula,'02 Silverado,'15 200s
Engine: L98, LQ4, and 3.6 Pentastar
Transmission: 4L60/4L80E/9HP48
Axle/Gears: 2.73posi/3.73posi/3.73
Re: setting tv cable by using line pressure

Originally Posted by Mikz86TA
Oh BTW Pressures It depends on your tranny model. Do you have the ID off the side? That will help. Here is the overall ranges for right now.
TV@minimum : all at 1000RPM
Rev = 84-148
Lo and 2nd = 163-226
Pk Neu 3rd OD = 65-90
TV@maximun : all at 1000RPM
Rev = 157-323
Lo and 2nd = 183-226
Pk Neu 3rd OD = 123-196
Keep in mind these are overall ranges. Like if you have model xxx they are closer ranges. There are about 10 different ranges pertaining to the exact model.
The ID is on the right rear just above the pan line. Its etched into a flat boss there. Get the whole ID, post it and someone can decose it for ya.
Hope this helps. You really want to do this correctly. Trust me on that =)
Hey Mikz86TA, I'm thinking about doing the same pressure test as well. Could you specify what the exact psi ranges for my 700R4 would be? You already know what year my 700 is(lol), with all the questions I've thrown at you so far. But if it helps, 700R4 out of 91' L98 Z28. And also, how's the rebuild coming along?
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Old Oct 18, 2007 | 09:27 AM
  #13  
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From: Decatur Texas
Engine: 355
Transmission: 700r4
Axle/Gears: 3.73 Trutrac
Re: setting tv cable by using line pressure

He needs to know the model. The model is the big 3-4 inch letters and/or numbers on the side. It will be something like MD or MC casted in to the case on the side on the bell housing. Each model has its own set of pressures.
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Old Oct 18, 2007 | 12:12 PM
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Re: setting tv cable by using line pressure

That's all assuming of couse, that the transmission's internals haven't been changed from however they cam as whatever "model" the case says; that it doesn't have a shift kit, or any other valve body or pump or regulator type modifications; and of course, that the TV cable operates over its FULL RANGE from idle to WOT, like it's supposed to, without which it WILL BE IMPOSSIBLE to ever get it to work right.

And of course, you know what "they" say about "assume"...

Sounds to me like, step 1 is to get the right linkage piece, to establish the correct cable travel; step 2 is to set it the factory way; and then go from there.
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Old Oct 19, 2007 | 12:22 AM
  #15  
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From: Tallahassee, Florida
Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: setting tv cable by using line pressure

My rebuilds almost done. Putting the VBody and that stuff in tomorrow and its pretty much done. But I am cleaning the old undercoating off and redoing under the car. Just seemed like a good time to do so =)
Just get me that model and Ill post up the 'orig' pressures.
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Old Oct 19, 2007 | 02:06 PM
  #16  
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From: North Carolina(but you'll never take the DC out of me!!!)
Car: '91 Formula,'02 Silverado,'15 200s
Engine: L98, LQ4, and 3.6 Pentastar
Transmission: 4L60/4L80E/9HP48
Axle/Gears: 2.73posi/3.73posi/3.73
Re: setting tv cable by using line pressure

I'll put it on the ramps tonight when I get home from work. I'll get the ID # and post it tomorrow or later tonight when I get home.
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Old Oct 19, 2007 | 05:46 PM
  #17  
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From: Tallahassee, Florida
Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: setting tv cable by using line pressure

Ill chack later =)
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Old Oct 23, 2007 | 01:37 AM
  #18  
91 camaro racer's Avatar
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From: Fairfield, CA
Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
Re: setting tv cable by using line pressure

ok so i looked at my id number, it is MD8, so what would the pressures be for that tranny? thanks for the help!!
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Old Oct 23, 2007 | 02:16 PM
  #19  
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From: Decatur Texas
Engine: 355
Transmission: 700r4
Axle/Gears: 3.73 Trutrac
Re: setting tv cable by using line pressure

Originally Posted by 91 camaro racer
ok so i looked at my id number, it is MD8, so what would the pressures be for that tranny? thanks for the help!!
I completely screwed up on the model number location. Sorry, I have been working some crazy hours lately preparing for the up coming holiday season.
The model number is on the back corner of the pan on the passenger side. The number will look something like 1CJM344C. It will be engraved on a little flat spot. You may need a rag or something to clean it off. Let me know and I will get you the pressures. I have the books in front of me.
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Old Oct 23, 2007 | 11:59 PM
  #20  
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From: Tallahassee, Florida
Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: setting tv cable by using line pressure

X2. Thats the number you need
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