The Stovebolt Site Forums The Shop Area Engine Shop Need basic 1949 1/2 ton 216 transmission info

OK, transmissions are out of my comfort zone so please be patient. My '49 1/2 ton truck with original 216 engine has developed a noise that seems to be located around the transmission area. I have only noticed this noise when in second gear. The noise is not present all the time - it comes and goes without warning. However, it might be more prevalent while first accelerating in 2nd gear. I can only describe the noise as a metallic scraping sound (sorry). So, here are my two questions:
1. Any ideas what this could be - I didn't give you much to go on so any ideas are welcome.
2. According to the shop manual, the trans is lubricated with 1.5 pints of SAE90. Draining it is easy enough but I haven't been able to determine where to refill it. What am I missing?
Thanks for any ideas - 49trucknut

Hardly an expert but I'll give you my 2 cents. Noise from a trans could be a bearing. I think there must be a trick to testing which, accellerating, decellerating, neutral running and so on. Surely someone here knows. I have used Lucas oil in my trans and find it is quieter but it could be different with yours.
Filling the trans is done from the pipe plug on side of the tranny on the passenger side. Not easy to get at for filling but it can be done. If the trans is bone dry and has not had oil in it you may have to put some in the back where the u-joint lives. The Chevy shop manual is the bible for things like this.
Hope this helps a bit.