Conversion u-joints

[bkahler]

I just recently became aware of special u-joints frequently called conversion u-joints that provide for two different bearing attachments.  My 51 had at some point been retrofitted with a 4-speed spur gear type gearbox and it appears that when the swap was made they brought along the older style of driveshaft that uses the Cleveland strap style of u-joint.  At the same time they replaced the rear yoke in the differential to make the combination work.

 

The problem I have is with the Grand Cherokee axle conversion I now have an axle that uses the Spicer clip style of u-joint that needs to mate to the Cleveland strap style of u-joint.  I've been unsuccessful in finding a correct 51 driveshaft for my truck so my next option was going to have the driveshaft modified at the rear yoke to work with the GC u-joint.  However just recently I saw some info on conversion u-joints and would like to pursue that avenue to see if that might be an alternative.

 

One of my hurdles is trying to figure out the correct designation of the Cleveland u-joint.  I can't seem to nail down a specific part number or anything like that.  

 

Help!!!

 

Thanks,

 

Brad

Edited March 14, 2020 by bkahler

[Plymouthy Adams]

there are three sizes....you shoul dnot have a problem getting one across the counter....while I cannot quote the number...the two smaller sizes share the same cup but one is wider cross the other is wider with larger cup....ASK to see the NEAPCO catalog..they were the developers of this if I recall correctly.

[bkahler]

Last night I found the NEAPCO catalog online and spent some time trying to decipher it.  I may end up taking the two u-joints to the local Napa and ask them to assist.  

 

Thanks