U-joint Sizing
Thread Starter
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Mountain Pass
Joined: Jun 2021
Posts: 139
Likes: 3
From: Dallas, Texas
U-joint Sizing
I have a 1971 2wd with short tail shaft C6 with a bolt on yoke and a 2-piece drive shaft. The issue I'm having is that the transmission yoke and the drive shaft need different size u-joints but no one seems to carry a u-joint like that. The cap sizes are the same at 1" but it's 3.2" outside to outside on the drive shaft and 3.6" outside to outside on the yoke. The PO had just eyeball centered the u-joint on the yoke and tightened it down which seemed to work okay but is obviously not right. All the auto parts stores only carry a 3.2x3.2 u-joint for this truck. So I either have the wrong yoke or someone must make this asymmetrical u-joint. Anyone have any ideas?
Cargo Master
Joined: Feb 2006
Posts: 3,008
Likes: 249
From: North Pole, Alaska
Try this:
https://www.therangerstation.com/Mag.../ujoints.shtml
And this from Dana Spicer. You didn't say if it was an F-100 or 250 so I chose F-100.
https://www.danaaftermarket.com/sear...0&ymmType=AUTO
https://www.therangerstation.com/Mag.../ujoints.shtml
And this from Dana Spicer. You didn't say if it was an F-100 or 250 so I chose F-100.
https://www.danaaftermarket.com/sear...0&ymmType=AUTO
FTE Emeritus
Joined: Jan 2006
Posts: 2,288
Likes: 200
From: springfield Missouri area
If your caps are 1.063 and both side are external snap rings it should be a 353 u joint.
https://www.oreillyauto.com/detail/c...hd?q=353&pos=0
https://www.oreillyauto.com/detail/c...hd?q=353&pos=0
Thread Starter
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Mountain Pass
Joined: Jun 2021
Posts: 139
Likes: 3
From: Dallas, Texas
If your caps are 1.063 and both side are external snap rings it should be a 353 u joint.
https://www.oreillyauto.com/detail/c...hd?q=353&pos=0
https://www.oreillyauto.com/detail/c...hd?q=353&pos=0
Thread Starter
|
Mountain Pass
Joined: Jun 2021
Posts: 139
Likes: 3
From: Dallas, Texas
Try this:
https://www.therangerstation.com/Mag.../ujoints.shtml
And this from Dana Spicer. You didn't say if it was an F-100 or 250 so I chose F-100.
https://www.danaaftermarket.com/sear...0&ymmType=AUTO
https://www.therangerstation.com/Mag.../ujoints.shtml
And this from Dana Spicer. You didn't say if it was an F-100 or 250 so I chose F-100.
https://www.danaaftermarket.com/sear...0&ymmType=AUTO
Logistics Pro
Joined: May 2015
Posts: 4,462
Likes: 951
From: Tri Cities, TN
I answered that in your other thread and gave you a link to a FoMoCo part.
I have no idea about the speedo seal, but you have the wrong "U" joint on the driveshaft. You need one that is referred to as a big and little 1310/1330. Most parts stores will give you the wrong U joint if you aren't paying attention. Read the description you will see the dimensions are different. NOS Ford U-Joint Kit C5TZ-4635-F 1966 F100 4x4 OEM | eBay
Disregard the fitment Ford used that type of "U" joint on a gazillion different vehicles.
I have no idea about the speedo seal, but you have the wrong "U" joint on the driveshaft. You need one that is referred to as a big and little 1310/1330. Most parts stores will give you the wrong U joint if you aren't paying attention. Read the description you will see the dimensions are different. NOS Ford U-Joint Kit C5TZ-4635-F 1966 F100 4x4 OEM | eBay
Disregard the fitment Ford used that type of "U" joint on a gazillion different vehicles.
Last edited by Crop Duster; Aug 18, 2022 at 05:47 AM. Reason: More words
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