Car ran out of gas have not been able to start since what could the problem
be

Here’s the back ground to my problem. I purchased a 1985 300ZX in
great condition in 1986 from a friend.  Every fall I stored it and
removed the battery and placed it in my cellar on a wooden board.
Every spring I hooked up the battery and off I went never having

  Has anyone here put a Chevy 350 cu in in a older Z? Any advice and
information is welcome. Thanks