missouri redneck engine-tranny install???

I lifted my 65 Mopar big block & tranny w/ just a come-along from a beam I had installed when I built my garage in Atlanta (3 2"x12" pine bolted, 14' span). If your roof can't hold that load, it would surely collapse when you get 6" of snow. You have lots of sheltered space and plenty of light. Nice conditions w/ a low winter sun and no wind.