i was wondering how i can tell what year a timing chain cover is? this is the stock oil pan that was removed from the car http://i274.photobucket.com/albums/jj278/monte70car/003-2.jpg here is the oil pan gasket on the same pan http://i274.photobucket.com/albums/jj278/monte70car/004.jpg ive been told that the gasket is for a 86 and new motor. it is a small chevy motor that is being worked on. during the 1300 miles that was put on the motor it had no oil leaks took it apart and put a gear drive set in and put it back together it started leaking. the following parts have been replace the blance, timing cover seal, a stock replacement oil pan which takes the thick front seal. im not sure if it makes a difference or not but the dip stick is on the drivers side. where the rtv is at on the oil pan and gasket is where the oil is being blown out at.