Measurement of power steering valve

[lt155ruck]

Help needed. I have a 72 2wd blazer that I swapped an ls into a few years back. I did swap the power steering nut and valve into the back of the ls pump. Long story short the ps pump went bad and had both the new one and the old on the work bench and was right in the middle of putting the valve etc into my new pump and the phone rang .. . .. .. now i'm not sure which is which. One is about 1/8 long. Can someone measure either a stock 72 valve or an ls power valve and post so I can put things back as they should. I promise not to answer the phone again while dealing with similar parts.