I just got a 1986 chevy truck. It has a 350 tranny. When you get crank it up and put it in gear. It doesnt go into gear ..any of them. If you wait a minute or 2 then try it will work. It drives fine and works like it should all day. It just does that when you first go to drive it or if it sets for awhile (2-3 hours or so). I have dropped the pan and replaced the filter. Its got fresh fluids.
What am I looking at as some possible reasons for this problem. Is it a bad pump? Is that something difficult to change? Is it bad seals inside? I just don't know much about transmissions so any help or advice I can get would really help me out.
Thanks.