Drive Shaft: 64 hawk u-joints

[JEWELL]

Does anyone know how to tell if the rear u-joint in a 64 Hawk is a Spicer or Mechanics u-joint? I can't see a name or part number on the joint, so by looking at it what is the difference between the two brands.

Thanks, Mark

[bezhawk]

The way they are retained in the driveshaft. The Spicer joint has the familiar 'snap ring' outside of the cap. There is a groove in outside edge of the flange. Mechanics joints have a groove in the bearing cap and a 'c' clip retains the cap from inside the flange.
You will notice that the bearing is flush with the flange and wonder if someone left out the snap ring of a regular (spicer) u-joint.

[JEWELL]

THANK YOU!, Now I know I have the Mechanics U-Joints.

Mark