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Old 08-05-2023, 08:24 AM   #8
Joyridin
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Join Date: Sep 2020
Location: Cleveland, Ohio
Posts: 478
Re: th400 fixed yoke or slip yoke?

Quote:
Originally Posted by Ironangel View Post
Just to be clear and that we all understand the difference between a fixed and a slip yoke... First pic is a slip yoke, it simply slides on the output shaft splines. The second pic is a fixed yoke that is held in place with a washer and bolt, it will not slide.
That is not what my driveshaft shop stated, but your description would seem obvious.

The TH400 yoke on my truck was very short. Probably 1.5" shorter than one in a car. He used the term "fixed yoke" because with the 2 piece driveshaft, the yoke would generally not move so they used a very short version. With a 1 piece driveshaft, the yoke was a lot longer to allow for extended travel.

I put the short version back in and it works fine. If my truck sat at normal height with a lot of suspension travel, that short yoke might be an issue with a 1 piece shaft.
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