4T60-E shift kit project
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I guess I got to be the guinea pig for this project. ![thumbup](https://www.gmforum.com/gm/images/smilies/28.gif)
With the help of Dan and BillBoost, we finally got a shift kit made up for a 1995 4T60-E. There are some physical differences between the different models, but they all work on the same principle. To cushion the flow of fluid.
Take a look and you will see not much difference appearance wise.
4T60-E
![](http://www.kc2jga.com/trns4.jpg)
4T65E-HD
![](https://www.gmforum.com/howto/tech-info/t278802/PA210008.jpg)
Come to find out, mine only needed 2 spacers to be installed below the piston. I had to measure the complete travel of each piston to where the spring is fully compressed. The travel for the 1-2 piston on mine was 0.781 inches, and the 2-3 travel was 0.750 inches. I decided to cut my tubing(spacers) that would only allow each piston to travel 0.25". That was experimental cuts anyway.
Everything was put back together, I had mistakenly installed the oil lines wrong on the accumulator. Ooops. Ended up having to drain the pan again, pull the accumulator back out and fix the lines.![Roll Eyes (Sarcastic)](https://www.gmforum.com/gm/images/smilies/rolleyes.gif)
Took it around the block and I immediatley noticed a difference in the 1-2 shift, but the 2-3 I could REALLY feal a difference. I don't notice much if I lightly accelerate gramma style, but if I romp on it, it does make a difference.
Questions, comments?
Here is the Tech Info write for more details...
https://www.gmforum.com/performance-137/making-installing-shift-kit-4t60-e-transmission-287906/
![thumbup](https://www.gmforum.com/gm/images/smilies/28.gif)
With the help of Dan and BillBoost, we finally got a shift kit made up for a 1995 4T60-E. There are some physical differences between the different models, but they all work on the same principle. To cushion the flow of fluid.
Take a look and you will see not much difference appearance wise.
4T60-E
![](http://www.kc2jga.com/trns4.jpg)
4T65E-HD
![](https://www.gmforum.com/howto/tech-info/t278802/PA210008.jpg)
Come to find out, mine only needed 2 spacers to be installed below the piston. I had to measure the complete travel of each piston to where the spring is fully compressed. The travel for the 1-2 piston on mine was 0.781 inches, and the 2-3 travel was 0.750 inches. I decided to cut my tubing(spacers) that would only allow each piston to travel 0.25". That was experimental cuts anyway.
Everything was put back together, I had mistakenly installed the oil lines wrong on the accumulator. Ooops. Ended up having to drain the pan again, pull the accumulator back out and fix the lines.
![Roll Eyes (Sarcastic)](https://www.gmforum.com/gm/images/smilies/rolleyes.gif)
Took it around the block and I immediatley noticed a difference in the 1-2 shift, but the 2-3 I could REALLY feal a difference. I don't notice much if I lightly accelerate gramma style, but if I romp on it, it does make a difference.
Questions, comments?
Here is the Tech Info write for more details...
https://www.gmforum.com/performance-137/making-installing-shift-kit-4t60-e-transmission-287906/
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Just curious Mike, how did you install the oil lines wrong on the accumulator? Is the 4t60-e setup different compared to the 4t65-hd where the lines are not hard lines? Also, I'm assuming with the lines wrong there was no transmission movement at all (no gear changing)? If you made the mistake, it'* possible someone else doing this could as well, so it would be nice to document how not to do it. Save someone else having to drain the trans again.
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Glad you brought that up Tom.
There are 2 hard lines, and 1 soft line. Looking at the diagram below, you can see the 3 lines...
Lines (44) and (16) are the same size, line (19)is bigger than the other 2.
![](http://www.kc2jga.com/accu.JPG)
I was under the impression that it was not physically possible to connect the 3 lines more than one way. The 2 smaller ones can be swapped around. And yes, you still will go somewhere. It struggles in reverse and I only get up to 2nd gear.
I did notice some tension in the re-install of the accumulator when I first installed it. I chalked it up to the lines just arguing with me. Didn't notice until after everything was put back in.
I did annotate that possible mix up in the Tech article, so hopefully everyone that does the mod, notices it.
There are 2 hard lines, and 1 soft line. Looking at the diagram below, you can see the 3 lines...
Lines (44) and (16) are the same size, line (19)is bigger than the other 2.
I was under the impression that it was not physically possible to connect the 3 lines more than one way. The 2 smaller ones can be swapped around. And yes, you still will go somewhere. It struggles in reverse and I only get up to 2nd gear.
I did notice some tension in the re-install of the accumulator when I first installed it. I chalked it up to the lines just arguing with me. Didn't notice until after everything was put back in.
I did annotate that possible mix up in the Tech article, so hopefully everyone that does the mod, notices it.
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#6
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Forgot to mention, the 4T65-HD is setup just like the 4T60E. As you can see in Dan'* picture, his also has 3 lines, 2 rigid, 1 partial rigid with rubber tubing.
![](https://www.gmforum.com/howto/tech-info/t278802/PA210013.jpg)
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The one small line, did it have a rubber hose type coupling in the middle?
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I don't think so, I remember the small line being just like the others, and bent in the same direction. See how the two just fold down on Dans? All three were like that.
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Tom it was like midnight, there could have been a small elephant in your transmission for all you know and you wouldn't have noticed it at all. . . . .