Thanks for the info! Sadly enough, it is the rear seal. A mechanic looked at it and said it would be around 3,000 to 5,000 $$ to fix the problem. I'm hoping he just didn't want to do the job and gave me a high price. I'm hoping for that price, I could have the total engine rebuilt! I know prices vary from place to place, can anyone give me a ballpark figure on about how much I could be looking at to have this engine rebuilt? It is a 390 for my '63 Deville.