4l80e swapped stepside Silverado
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Teching In
Joined: Nov 2024
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4l80e swapped stepside Silverado Can anyone help me? I’m trying to figure out if I need to install a sleeve on my output shaft. My truck keeps ripping them. From what I’ve understood so far according to some googling lol the sleeve helps reduce risk if damaging transmission
Joined: Apr 2006
Posts: 3,890
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From: Grand Rapids, Michigan
Post up a message in the Auto Trans section, there are a few very knowledgeable people in there who can likely assist you. I'm no help, all I drive are manuals, lol.
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Teching In
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TECH Enthusiast
Joined: Jan 2019
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From: Roxana, IL
There are 2 basic 2wd style output shafts. Both styles have 91-96 with no lube hole & 97-up with a lube hole. The sleeve has nothing to do with damaging the transmission other than the leak you may build into it.
1) The slip yoke that requires a sleeve Item "C". It has full splines down to the 1/4" wide sleeve press on area. It can still have threads and thus the confusion. The sleeve has it's oring and the slip yoke is actually longer and has no undercut for an oring
2) The bolt on yoke, item "D" that had short splines with an oring on the shaft. The slip yoke is shorter & undercut for the oring.
If these are improperly matched, say with a slip yoke shaft & a bolt on yoke it will pull the slip into the seal as you tighten up the bolt. The yoke will damage the seal and cause a leak.
Here is picture of one I built that was mismatched that way.
Here is how it should fit
And how it fits all installed
Here is a better view of a bolt on yoke shaft
and the slip yoke shaft
hope this clears some things up
