need help, i have a front drive shaft i think is from a 1 ton from the 80s the markings on the joint are 51 and 601 on the Yoke any help 4x4

[dcrider]

need help to identify a front drive shaft a 1980s i ton chevy the only marks are 51 and 601 on the front that bolts to the transfer. is there any way to look up the numbers thanks

 

[Bowtie-dad]

You can at Denny's driveshafts or on Dana's website. Those are part number for u joints I believe or yokes