Hello,

Would anyone know the factory measurements/style of U-joint that a 1973 Corvette used on the driveshaft. I'm getting a lot of vibrations when getting to high speeds. I greased both U-joints and they were clearly dry. I know that there are two different styles such as 1310 and 1330. It looks like no one has changed anything on the driveline and I just finished changing out the trailing arms, new bearings, and new spindles.

 

If your U-joints had zerks, then they were replacements as the OEM ones didn't have them. At least mine didn't. One thing to check is to make sure they are phased correctly. Check the Factory Service Manual.

Also if they were dry, they may have already worn too much to save by greasing.