Slip yoke 4L80e Need help
Thread Starter
Staging Lane
Joined: Apr 2015
Posts: 63
Likes: 0
From: Kansas
Slip yoke 4L80e Need help im going from 4l60e to 4l80e and im looking into the slip yoke and kinda confused im trying to figure out what slip yoke i need. i DO have the stock slip yoke that was in the express van that i took the transmission out of. was wondering if i could put that on my stock drive shaft in a 2000 ws6 or if i need to get the TH400 slip yoke. there is a picture of the out put shaft in the thumbnail if that helps. Thanks
Definitely use the stock yoke. My 80e was out of an 06 express van and had the stock yoke with it also. It should be a snug slip fit with no wobble when fully engaged. It takes a simple conversion u-joint. Any advance auto parts or napa store should have in stock. The Yoke size is 1350 and the ds size is a 3R I believe. I ran my combo like that into the high 10's and got scared. BTW if its a Spicer yoke that came with the trans it needs to be balanced to the ds in order to not have high speed vibrations. I noticed it at 70mph and higher especially at the track on the big end.
Last edited by JRENIGAR; Oct 6, 2015 at 11:17 AM.
Thread Starter
Staging Lane
Joined: Apr 2015
Posts: 63
Likes: 0
From: Kansas
how do i tell if its a spicer yoke ? i found the u joint for the conversion, for the stock slip yoke and BTW i told them 1310 u joint to a 1350 and they look at me like i was an idiot. the parts guy told me in a smart *** comment " we go by Cap diameter these days" 
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Joined: Aug 2010
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From: Ann Arbor, MI
Just for grins I looked up Spicer yokes and u-joints and the pics showed a stamped "Spicer" or their logo.
Not sure what mine are, but they are stamped "Made in USA".
Here are two 4L80E yoke threads that might help:
https://ls1tech.com/forums/automatic...tion-help.html
https://ls1tech.com/forums/automatic...aft-4l80e.html
Not sure what mine are, but they are stamped "Made in USA".
Here are two 4L80E yoke threads that might help:
https://ls1tech.com/forums/automatic...tion-help.html
https://ls1tech.com/forums/automatic...aft-4l80e.html
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