Slip yoke 4L80e Need help
10-05-2015, 10:44 PM
#1
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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
10-06-2015, 05:38 AM
#2
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; 10-06-2015 at 11:17 AM.
10-06-2015, 06:25 PM
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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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10-07-2015, 09:53 AM
#8
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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