My answer is 42 feet, plus one lift to raise it from the garage floor, and a final heave, to put it into someone's truck.
I know this going to read like the most idiotic and moronic post in the world, but at age 46, and a little scared after visting relatives in nursing homes last week, I am proud that I found the kinetic energy yesterday to carry that dead W123 300D engine block in my garage 42 feet to the end of my driveway and put it into a sheet metal recycling truck picking up my neighbor's washing machines.
That block had sat there for an year and was really looking like an eyesore and I never found the time to rig up my hoist to put it into my car to drive it to a dump. I thought it was out of the question after a bout with high blood pressure and after a coworker messed up two discs trying to push a car.
But the visit to the nursing home affirmed my Neitschesque intention to carry the damn thing myself like I could do when I was 20 and pumping iron all the time.
So my answer is 42 feet, plus one lift to raise it from the garage floor, and a final heave, to put it into someone's truck.
I dont know if this post will die a quick death, draw laughter and derision, or make me look like an _ss, but there is something Neitschesque in being able to do this!