HELP! I've just about lost it over this one. A few months back I dropped the oil pan on my '73 k5 (350/350) to replace the rear main seal. While I was at it I dropped in a new pump, pick-up and new stock oil pan (the old one was beyond recognition). Almost immeditately after getting everything back together the pan-to-timing cover seal starts to leak. Because it's a '73 I used the thin front seal not paying attention to the fact that the previous owner had thrown on a crappy aftermarket timing cover that I was told uses a THICK front seal. So. . . . . I drop the pan again and throw in a thick seal. Thing still leaks. So I junk the old chrome timing cover in favor of a new Edelbrock aluminum one with the idea that it'll be more rigid and contains no welds. Guess what. . . . thing still leaks! Now I'm thinking of going with a one-piece gasket for a change of pace to see if it helps. I'm installing the gaskets properly and torquing the pan to approx. 12 ft. lbs. Any ideas???? Typically I wouldn't mind a small oil leak but it's gotten personal!