I rented an engine hoist once. It sucked because it was like $15 a day IIRC and we would have needed it for a few weeks, plus it was kind of beat up and junky. So, we ended up taking it back after 1 day and going out and buying one. I picked up a folding one for $180 and have used it a few times since then.
If you still want to rent one though, check out local equipment rental places. Some auto parts stores may rent them as well, but I know when I worked at Advance, we didn't have any kind of tool or equipment rental program in place.