Re: 727 shifting question
[Re: JohnRR]
#1250981
06/14/12 04:42 PM
06/14/12 04:42 PM
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tippytoe
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Quote:
you have the end of the slot closest to the firewall up against the carb stud at idle
That is originally how I set it up, but the 2-3 shift wasn't until 55 at that setting. It shifted a little better (47 mph) when the linkage had some slop at the throttle stud.
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Re: 727 shifting question
[Re: JohnRR]
#1250982
06/14/12 04:48 PM
06/14/12 04:48 PM
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Quote:
It appears what you have is 2 bbl linkage connected to a 4bbl , that top piece is not the same 2bbl to 4 bbl .
You are correct, it is a 2 bbl linkage I am trying to use. As far as "top piece", I am not sure what you are referring to. Are you talking about the linkage rod itself, or something else ?
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Re: 727 shifting question
[Re: tippytoe]
#1250983
06/14/12 07:43 PM
06/14/12 07:43 PM
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John_Kunkel
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The top piece is the rod that the slotted end screws onto, Edelbrock makes thread extensions for it so the rear of the slot will contact the rear of the carb stud at idle.
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Re: 727 shifting question
[Re: John_Kunkel]
#1250984
06/14/12 09:29 PM
06/14/12 09:29 PM
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Quote:
The top piece is the rod that the slotted end screws onto
Ok, I understand what you are referring to. The picture I posted was taken when I finally gave up. I started off the adjustment with the rear of the slot contacting the throttle stud at idle, like John RR suggested. It actually shifts better (2-3 at 47 mph) in the pictured position than the correct position John RR mentioned(2-3 at 55 mph). That is why I am wondering if I don't have some internal transmission problems (shifts better with kickdown adjustment wrong than when its adjusted correctly). 
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Re: 727 shifting question
[Re: MoparforLife]
#1250987
06/15/12 01:44 AM
06/15/12 01:44 AM
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Dads426
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With the linkage disconnected at the carb you should be able to pull the kickdown lever on the trans fully forward so that when the linkage is reinstalled on the carb stud it will be at the rear portion of the slot, as shown in the previous post. The spring should exert forward pressure to keep the linkage tight against the carb stud so that when the throttle is opened the linkage moves and pushes the kickdown lever on the trans to the rear. These adjustments are done at curb idle (not fast idle).
If the trans is an 80's 727 they have a problem with the front clutch pack seal failing which causes a late 2-3 upshift. This can be detected in the car by pulling the valve body and doing an air test.
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Re: 727 shifting question-UPDATE
[Re: John_Kunkel]
#1250989
06/20/12 09:49 PM
06/20/12 09:49 PM
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Quote:
Easiest way to tell is to temporarily disconnect the linkage at the transmission lever and pull the lever full forward; it should shift way early with the linkage disconnected, if it still shifts late the problem is internal.
This is why I posted the question. I hadn't even thought about trying that. 
UPDATE: I performed the test above above & sure enough, the transmission shifted way early like it was supposed to. I also may have found the real root of my problem (which leads to another question). When I was under the car disconnecting the linkage from the lever, I noticed the kd lever on the trans cant come all the way forward with the linkage connected. The pivot that mounts on the trans can not go any farther but the kd lever still needs to come forward another 45 degrees.
Question 1: Is the kickdown linkage (kd lever, rod, pivot) at the transmission different from a 904 to a 727. The car has a 727 but the linkage is exactly the same as whats on my 904 setup on my 70 Coronet.
Question 2: Approximately where is the kickdown lever at (based on clock position) when it is all the way forward (toward the front of the trans) ? Here is why I ask:
When the k/d lever is all the way forward (released) on my trans, it is approximately in the 10 o'clock position (assuming you are standing directly over the transmission, looking down). My buddy's trans fully released is in the 9 o'clock position. Makes me wonder if the lever ( or shaft it mounts on) has been messed up & is the root fo my whole problem.
Any info & opinions would be greatly appreciated !
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Re: 727 shifting question-UPDATE
[Re: 68jim]
#1250994
06/21/12 04:29 PM
06/21/12 04:29 PM
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John_Kunkel
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Many 727/904 linkage parts aren't the same and a mismatch of parts is a common cause of your original problem...that's why I said to disconnect it at the trans lever for troubleshooting.
There are so many engine/trans linkage combos over the years that it's hard to say what's correct, best way is to procure the entire linkage from an unmolested car with your same engine and trans.
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Re: 727 shifting question-UPDATE
[Re: John_Kunkel]
#1250995
06/21/12 06:12 PM
06/21/12 06:12 PM
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Quote:
There are so many engine/trans linkage combos over the years that it's hard to say what's correct, best way is to procure the entire linkage from an unmolested car with your same engine and trans.
That's what I was starting to conclude. Since the car isn't a matching numbers show car, I have decided to just scrap the whole linkage setup & go with the Lokar kit & be done with it. I went to a buddy's place (Marks69) yesterday & he showed me the setup on his car. I think that would be the quickest, sure-win fix. My Dart is one of those "wish I would have never bought this POS" vehicles, and I need to get it back on the road ASAP to give me a more positive attitude for the car. Working on something you love is one thing  , working on something you despise is the extreme opposite  .
I wanna say thank you to everyone with their input (it helped alot).
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Re: 727 shifting question-UPDATE
[Re: tippytoe]
#1250996
06/21/12 07:28 PM
06/21/12 07:28 PM
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John_Kunkel
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With the Lokar you could be back in the same situation if you follow their adjustment instructions. You need to measure the full travel of the carb lever where the cable attaches and then measure the full travel of the transmission lever where the cable attaches; it usually won't be the same so you need to drill a new hole in the transmission lever so that the full travel of both levers is the same.
There should also be a spring pulling the transmission lever forward.
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Re: 727 shifting question-UPDATE
[Re: John_Kunkel]
#1250998
07/22/12 12:44 AM
07/22/12 12:44 AM
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FINAL UPDATE: Removed the mismatched factory garbage & installed the Lokar kit. Car shifts great & couldn't be more pleased ! Thank you for everyone's input.
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Will do ! Thanks for the info !
