slow response

[ChevyGuy]

I have a th400 in my 76 and i started to notice that when i first start it up for the day that when i put it in rev to back up its fine but then i drop it in drive to take off and it takes a couple seconds to to engage so i can leave but other than that its fine for the whole day. I was just wondering if anyone had this issue.

[73c20]

i oddly enough have the same problem with the same tranny (tho mine is a '73). somtimes though, mine doesn't want to engage at all. of course i just put in some fluid and it works fine. im no expert on trannies, so i couldn't say what the problem is exactly.

[toplessblazer]

Could it be the torque converter loses fluids while sitting over night and is in the process of filling back up when you first start it in the morning?  

[ChevyGuy]

I checked the fluid today and its alittle over the full mark. My dad said something about the torque converter but he wouldnt know for sure unless he drove it. A coworker was talking about the filter might need to be changed. Its still red but not clear red but its not burnt. I dunno was just curious I dont know how many miles was on it before I got it but I put about 35,000 on it since it was installed 6 years ago.