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Anybody have a photo or good description of how to hook up the kick down cable from a th350 to a edelbrock carb? Any tricks to adjustment? I'm a little confused looking at the long slot on the kick down cable end, and the available holes in the carb throttle lever. Which hole do I stick it to? Outside or inside of throttle lever? What kind of fastner?
 

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Without posting a pic, I'll try to help...

First, you will want the Detent/Kick down to be on the "bottom part" of the throttle linkage on the carb, so that when you depress the pedal your accel linkage will pull the throttle linkage back and rotating the detent part of the linkage foward. (I hope that makes since ?!)

The detent cable as you mentioned, has the long slotted hole in it, which will attach to the throttle linkage and when the stud (can be bought anywhere) reaches the end of that slotted hole, it will pull the detent cable.

When you are at WOT (wide open throttle) you want the detent to be at the end of the pull. (and remember, just because you are pulling WOT at the carb, doesn't mean that your pedal is pulling it that far. So WOT, should be measured with the pedal.)

Hopefully that helps and maybe someone can explain it in words better then myself ?! :eek:

-Brent Thomas
Ohio
 

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I un hooked mine completely and soldered the end shut. I figure with the mega shift I can down shift just as well. Anyone else disconected theres?

Chuick
 

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Yep ... good pic Danno - we hooked ours up to hit about 7/8 throttle input after installing the new motor ... then the new cable was promptly melted by the new headers :eek: :D :) ... so just make sure you route it away from the hot stuff in the engine bay.

We just got in a hurry to hear it run and drive it down the road :D .
 

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Okay, you all offically threw me for a loop on this ?!
You didn't hook up your kick down ?!
Why!!!

How do you pass?
How do you "get up and go"?

Did you switch you valvebodies or soemthing from stock?

:confused:
-Brent Thomas
Ohio
 

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The kickdown is just a way to downshift with your foot (what we used to call, "passing gear"). If it's not hooked up, you just manually downshift.


Dan (but mine's hooked up);)
 

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No valve body changes. If you manually shift there's no need for a kick down, the 4 barrel has enough power in its self. Most street rodders disconnect them.
Chuck;)
 

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I welcome correction if I'm wrong, but I thought a TH350 needed the cable hooked up to make correct/more pressure in the transmission for the shifts. What I mean by that is I thought the shifts were on the lame side if the cable is not pulled out as the the throttle opens. For example, if the cable was permanently pulled 3/4 of the way out, would the shifts not be firmer than if it was at rest?

Carl
 

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Most street rodders disconnect them
Forgive me for sounding argumentative, but I completely disagree !!
(IT makes no sense !!)

Again, Why not just hook it up?

So, you are telling me that if you jump on the freeway are you need to pass someone at 50-60 mph, you drop it down to "D2" ?!

Have you ever missed "D2" and dropped down to "D1" (and listened to your engine and transmission loose a little life)?

I have only been in and floored a couple of cars that the detent was not hooked up (all being 350's w/4bls) and never have I had one "get up and go", but instead boog down and slowly gain speed. Again, why not just hook it up?!

I ONLY couple of reasons I can think of is that so that someone can make it sound like they are "manually shifting", they don't know how to hook it up, or they are jump too lazy.

There are NO reasons I can think of that they would be against hooking it up?!

PLEASE, someone chim in if they can change my way of thinking ?!
:)

-Brent Thomas
Ohio
 

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DANNO said:
The kickdown is just a way to downshift with your foot (what we used to call, "passing gear"). If it's not hooked up, you just manually downshift.


Dan (but mine's hooked up);)
This is what I understood. I never had mine hooked up all last year. Use my hand instead of foot for passing. (Or I should say hand and then foot:D ) Not a problem for me. I did ask the guy who just rebuilt my turbo 350 about it and he said it IS harder on the tranny if you leave it unhooked and manually shift. I couldn't tell you why though.:)
 

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Carl Stevenson said:
I welcome correction if I'm wrong, but I thought a TH350 needed the cable hooked up to make correct/more pressure in the transmission for the shifts. What I mean by that is I thought the shifts were on the lame side if the cable is not pulled out as the the throttle opens. For example, if the cable was permanently pulled 3/4 of the way out, would the shifts not be firmer than if it was at rest?

Carl
You may be thinking of the Throttle Valve cable in overdrive trannys. Those must be hooked up and properly adjusted.


Dan (maybe?):D
 

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Carl Stevenson said:
I welcome correction if I'm wrong, but I thought a TH350 needed the cable hooked up to make correct/more pressure in the transmission for the shifts. What I mean by that is I thought the shifts were on the lame side if the cable is not pulled out as the the throttle opens. For example, if the cable was permanently pulled 3/4 of the way out, would the shifts not be firmer than if it was at rest?

Carl
I agree with Carl. According to the service manual, the TH350 detent (kickdown) cable connects to both a detent valve and a detent pressure regulator inside the valve body. In addition to downshifting, it also increases the line pressure that's applied to the clutches. That increased pressure helps prevent the clutches from slipping.

Repointer said:
I did ask the guy who just rebuilt my turbo 350 about it and he said it IS harder on the tranny if you leave it unhooked and manually shift. I couldn't tell you why though.
The reduced pressure is what would make it harder on the transmission. It could allow the clutches to slip under the load of hard acceleration.
 

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The kickdown on my car dosent work all the time only when it wants to so sometimes I just shift down, but the other day I was going about 45mph and I droped it into 1st instead of 2nd and boy do I wish I wouldent have. TH350's are strong but just hope you dont mess up like I did especually if your going faster then I was.
 

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Ray_McAvoy said:
I agree with Carl. According to the service manual, the TH350 detent (kickdown) cable connects to both a detent valve and a detent pressure regulator inside the valve body. In addition to downshifting, it also increases the line pressure that's applied to the clutches. That increased pressure helps prevent the clutches from slipping.
The additional line pressure is only applied when the detent cable is pulled out far enough to activate the kickdown, usually at WOT. At anything other than WOT, it does nothing.

This what the guy who built my kickdown cable at the trans shop told me when I asked him about it before having him fab up my kickdown bracket.
 

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That I'd like to know is exactly how to go about connecting a kickdown cable inside the transmission without bending up all the linkages or the cable itself. My TH350 currently has a "late" style cable and I will need to replace it sometime down the road after the engine's in.
 

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Hi Dude,

The lower end of the cable has a small tab on the end with a tiny hole in it. The linkage "rod" from the transmission is basically a stiff wire with a zig-zag bend in the end.

Once you remove the small bolt that secures the cable jacket to the transmission case, you can pull the jacket out away from the case. If you do this with the carburetor end of the cable disconnected, you should be able to pull it out to the point where you can clearly see the tab with the tiny hole hooked on over the zig-zag bend in the end of the wire link.

What you need to do is carefully turn the tab sideways as you thread it up over the bend at the end of the wire link. Installing the new cable is very similar. Turn the tab on the end of the cable sideways and guide the hole in the tab over the wire link. Allow the tab to turn back to it's "normal" position inline with the cable as it goes around the first bend in the wire link. This is where the tab needs to be ... between the 1st and 2nd bend of the zig-zag. Now slide the cable jacket straight down into the transmission case being careful not to bend the wire link rod.
 
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