1978 C10 305 5.0L Custom deluxe th350 transmission leak

[albertgen]

I noticed a little bit of leaking where the the tailshaft housing bolts on. I read and seen the article above about the cup and O ring. I've read that a l;ot of folk had no cup or O ring? Is that true? I've had my truck in the garage for the winter while trying to wire brush the rust off, so it has been sitting for a spell. I did install a new transmission mount, the old one was wore all the way down, so the new mount lifted the tail housing a couple of inches. I also found a website that offers a plug for that weep hole. I don't know about the vent or how to check it. Thank you, Al