SM420 Transmission Rebuild Walk through
Channel: The Workshop
Date: 2020-07-10

This is a walk through of a disassembled SM420 transmission.  I am not a pro, and this is my first transmission rebuild. I saw posts from others asking for SM420 videos so I wanted to help folks by documenting how it went. I like to see how something is done when I'm learning. The video doesn't cover the removal of transmission.  You should have wrenches, snap ring pliers, gear pullers, bearing pullers, a pin spanner wrench, and a shop press or arbor press.  If you have these tools, it won't be too hard.  I cover a couple of the issues I ran into as well.
I have other videos in my channel that detail specific parts of the transmission, as well as other sub assemblies found on 47-54 Advanced Design Chevy/GMC trucks.