If you are going to let the engine set for awhile, I would leave the intake loose, I use those small acid brush to recoat the cam lobes with paste, and put a small dap of paste on the bottom of the lifter...coat the body or the lifter gallery with regular motor oil...the lifter needs to be free to move to break in the cam...then bolt on intake manifold...
Plus prior to putting intake on....prime the engine with the oil pump...and slowly move the engine by hand ....
