Lee, I seem to recall the larger bolts on the 4 corners torque to @ 20 ft lbs, and the small bolts are @ 15 ft lbs. I start in the middle and work to both ends.
A real handy book that includes all the specs is the Chevy Inline 6 Performance Manual by Leo Santucci, available right here from the club's web site. The main thing as has been mentioned is you don't squeeze the daylights out of the gaskets and / or dimple the pan at the bolt holes. I too find after about a week or two it is good to go back over them for a second time. They don't back out but the gasket does flatten out.
