My '55 has a 327 and a TH350 in it. It runs just fine but on occassion it'll drip trans fluid after being parked. Here is what is odd; it only drips fluid after backing up... that is, if my last motion into the garage is in reverse, it will leak about a cup or two out overnight. If after I back it in I put in drive and let it sit for a few seconds, then put in to park, it doesn't leak. The pan is clean and lines are good. Any thoughts? Thanks. PS, headed to BJ in Vegas this weekend. Looks like some nice Tri-five stuff there.