Re: Looking For Kick Down Linkage Experience
[Re: Rodder]
#2590776
12/12/18 11:43 AM
12/12/18 11:43 AM
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Joined: Jan 2003
Posts: 12,216 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,216
Benton, IL.
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Don't sweat which procedure to use. It's only a starting point. Pick one and drive the car. Short, low throttle test drives won't hurt anything. See how it shifts and whether it will kick down and adjust from there.
If it won't shift, there is too much pressure. If additional throttle doesn't delay the shift, there is not enough. There is enough acceptable range of adjustment, that the shift points and kick down can usually be set to personal taste.
Master, again and still
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Re: Looking For Kick Down Linkage Experience
[Re: Rodder]
#2590932
12/12/18 05:00 PM
12/12/18 05:00 PM
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Joined: Jan 2003
Posts: 25,902 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,902
Rio Linda, CA
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He says the linkage needs to be pushed back until you feel resistance on the lever and then set the link on the carb pin. The rod should be 1/4 to 1/3 of the way back from the full back position when at an idle. Is anyone familiar with this or tried it? This method seems to be in vogue nowadays based on the belief that the first part of the lever's travel does nothing because there is no resistance felt in the first part of the travel. Of course you feel no resistance on the bench because there is no pressure in the trans. If you take a hard look at the TP linkage operation, you'll notice, first off, how little throttle movement is required to get the car moving during normal driving and how little TP linkage movement accompanies the throttle movement. So, by setting the linkage as recommended you're telling the trans that you are applying 1/4 to 1/3 throttle and it will shift late. Anybody who has played with linkage adjustments, when adjusted by the factory procedure, will tell you that one or two turns (.040"-.080") of the linkage rod will make a noticeable difference in the upshift speed at light throttle so this proves that the linkage is controlling the trans even in the first part of the lever's travel. My advice is to ignored all TP linkage adjustment methods other than the factory recommended procedure (lever full forward at idle) and then make minor adjustments to suit yourself after the initial adjustment. Of course, when carb/manifold configurations prevent the use of stock linkage, you have to get creative but the operation of the lever needs to stay the same.
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Re: Looking For Kick Down Linkage Experience
[Re: Rodder]
#2592521
12/15/18 08:59 PM
12/15/18 08:59 PM
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Joined: Jan 2003
Posts: 5,791 Hamilton, Ontario Canada
Magnum
master
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master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
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All those procedure and advice assumes you have the factory original kickdown set up, original transmission and stock engine. Once you have changed the powerband, torque convertor or anything in the engine. Upshift and downshift points will not be the same.
If any lever has been changed to another ratio. Most set procedures will not be 100% correct.
At a minimum Full throttle when the transmission lever is almost bottomed out. If it shifts too late loosen it off.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: Looking For Kick Down Linkage Experience
[Re: A727Tflite]
#2592541
12/15/18 09:37 PM
12/15/18 09:37 PM
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Joined: Jan 2003
Posts: 25,902 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,902
Rio Linda, CA
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Shift points -
It’s all about throttle pressure versus governor pressure.
Yes, whether you have a blown nitro Hemi or a stock /6.
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Re: Looking For Kick Down Linkage Experience
[Re: John_Kunkel]
#2594687
12/20/18 02:33 PM
12/20/18 02:33 PM
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Joined: Aug 2008
Posts: 395 Milan Ohio
ct440rod
enthusiast
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enthusiast
Joined: Aug 2008
Posts: 395
Milan Ohio
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Previous owner removed line up hole on bracket. linkage on carb is all the way out maybe two threads left and transmission is still shifting way to soon.
Last edited by ct440rod; 12/20/18 02:35 PM.
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Re: Looking For Kick Down Linkage Experience
[Re: ct440rod]
#2594773
12/20/18 07:06 PM
12/20/18 07:06 PM
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Joined: Jan 2003
Posts: 25,902 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,902
Rio Linda, CA
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Is the carb stock or aftermarket? An aftermarket carb without the correct Mopar throttle lever extension will cause upshifts to be off spec because of incorrect linkage ratio. 2-barrel linkage parts on a 4-barrel will cause insufficient threads to make proper adjustments.
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Re: Looking For Kick Down Linkage Experience
[Re: ct440rod]
#2594801
12/20/18 08:50 PM
12/20/18 08:50 PM
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Joined: Jun 2004
Posts: 935 Elizabethtown, KY
6T9Hemi
super stock
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super stock
Joined: Jun 2004
Posts: 935
Elizabethtown, KY
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More throttle pressure = higher shift point.
1969 340 4 Speed Swinger R4, black vinyl, white butt stripe, 3:91
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Re: Looking For Kick Down Linkage Experience
[Re: ct440rod]
#2595102
12/21/18 04:00 PM
12/21/18 04:00 PM
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Joined: Jan 2003
Posts: 25,902 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,902
Rio Linda, CA
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So if I have 3:91 gears there is nothing I can do so it will not shift so soon?? After market carb Holley 850. Once again, does the Holley have the correct 20-7 throttle lever adapter? If not, start there.
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