318 vs 360 weight

Yes, many parts will interchange. In fact, among LA series small blocks it's easier to list those which will not interchange... pistons, 360 cranks and 360 oil pans. But just because parts may physically interchange, does not mean that they are identical or operationally equivalent.

There are several books which give detailed interchange info. The Mopar "Engines" book and Larry Shepard's "How to Hot Rod the Small Block Mopar" are great starting points.