Hello All - I just finished going thru my Spicer 23 transfer case out of my 1958 NAPCO GMC 100. The issues that I was having... #1 Hard time shifting in/out of 4WD and Neutral. #2 Major Oil Leaks. Since I didn't find any really good pics/video on the rebuild, I decided to document mine for others. Here is the link.... 1958 Spicer 23 Rebuild Video or just search youtube for "Spicer 23 TCASE rebuild NAPCO". I hope it helps.

Last edited by Gdads51; 07/05/2024 4:01 PM. Reason: fix link to remove video from being embedded in SB server - link remains functional