Need Help on Odd U-joint at rear of driveshaft on 66 SS
jim larson said
Jan 17, 2014
I have an odd U joint at the rear. At sometime, someone replaced the rear tube yoke as it is NOT the standard 66 tube yoke. I think its an original driveshaft and the front tube yoke and slip joint yoke are of the standard 66 type, which uses a non grease-able 3010 u joint, with outside clips for both set of bearing caps, 3.218 outside diameter for both axis, and bearing caps of 1.062 diameter.
The rear u joint has a 3.622 outside diameter for one axis and a diameter of 3.218 for the other one. One set of bearing caps is held by the U bolts and the other is held by inside clips. The outside diameter of the bearing caps held by the U bolts is the standard 3.218. The outside diameter of the bearing caps axis held by the inside clips is 3.622. Both sets of bearing caps are the standard diameter of 1.062
Cant seem to find a u joint of this type.
-- Edited by jim larson on Friday 17th of January 2014 02:56:42 PM
-- Edited by jim larson on Friday 17th of January 2014 02:58:22 PM
Lost in the 60s said
Jan 17, 2014
I have an empty NAPA box in the shop for that conversion joint that I needed for my '70 Chevelle. I'll see if I can find it and get a part number.
67ss said
Jan 17, 2014
Looks like you have a 1330 tube end and a 1310 yoke.
Kind of except that the bearing caps on the large end, which is the tube end are held in by inside c-clips, there is no provision inside the tube yoke for snap rings.
The joint that is in the yoke now actually has provisions for inside clips on both axises. It just that the 1310 end is held on by U bolts and little tabs that are plat of the pinion flange.
I haven't taken it out yet, so don't know for sure there are no provision inside the tube yoke of outside snap rings.
-- Edited by jim larson on Friday 17th of January 2014 05:17:10 PM
Lost in the 60s said
Jan 17, 2014
The number that I have from the '70 doesn't match up to what you have.
I also have a conversion u-joint in the '66 and it is too short thru the diff yoke and vibrates. I probably need the same needle you are looking for...
I have an odd U joint at the rear. At sometime, someone replaced the rear tube yoke as it is NOT the standard 66 tube yoke. I think its an original driveshaft and the front tube yoke and slip joint yoke are of the standard 66 type, which uses a non grease-able 3010 u joint, with outside clips for both set of bearing caps, 3.218 outside diameter for both axis, and bearing caps of 1.062 diameter.
The rear u joint has a 3.622 outside diameter for one axis and a diameter of 3.218 for the other one. One set of bearing caps is held by the U bolts and the other is held by inside clips. The outside diameter of the bearing caps held by the U bolts is the standard 3.218. The outside diameter of the bearing caps axis held by the inside clips is 3.622. Both sets of bearing caps are the standard diameter of 1.062
Cant seem to find a u joint of this type.
-- Edited by jim larson on Friday 17th of January 2014 02:56:42 PM
-- Edited by jim larson on Friday 17th of January 2014 02:58:22 PM
Looks like you have a 1330 tube end and a 1310 yoke.
http://www.drivetrainamerica.com/p-50-5-134x-dana-spicer-conversion-u-joint-13101330.aspx
Kind of except that the bearing caps on the large end, which is the tube end are held in by inside c-clips, there is no provision inside the tube yoke for snap rings.
The joint that is in the yoke now actually has provisions for inside clips on both axises. It just that the 1310 end is held on by U bolts and little tabs that are plat of the pinion flange.
I haven't taken it out yet, so don't know for sure there are no provision inside the tube yoke of outside snap rings.
-- Edited by jim larson on Friday 17th of January 2014 05:17:10 PM
The number that I have from the '70 doesn't match up to what you have.

I also have a conversion u-joint in the '66 and it is too short thru the diff yoke and vibrates. I probably need the same needle you are looking for...