I never went crazy when I have had to store an engine. If you have the bottom end, timing cover, and fuel pump access covered, you are mostly there. If you have heads on it along with valve covers as well as an intake - better yet. It doesn't sound like you have heads on it, so my way is to use a light grease like Vaseline and spread a thin coating on the blocks head surface and any exposed cylinder wall, sealing the piston tops to the wall. Then lay a very thin, .003" for instance, plastic sheet on top and tape it in place then put a plastic bag on it to keep the dirt off. Cheap. moisture resistant and easy to remove. Lastly, keep it inside and under cover - mine go in my basement - and I have an aching back to show for it every time