440 motorhome engine

striped the bottom end completely apart today. 6pac rods found along with provisions for a pilot bearing in the crank, the slugs on the other hand...wayyyyy down in the holes... while pulling the heads off, also noted the 2 holes on both sides of each plug into the water jacket and a couple extra holes drilled into the deck and heads for coolant passage..also have never seen this yet but dampened springs on the exhaust valves and single on the intakes... probably emphasizes exhaust flow but I didn't think that there would be enough lift or usable rpm's with that cam in there to warrant the dampeners???