The MCD on a 777F is actually the largest in the business, making it quite a bit easier to rotate long/wide objects in and out. The cargo-loading system is computerised, allowing you to place a 16 or 20 footer at a given position, pull a couple of handles and it'll rotate in or out automatically. This goes a long way to reduce interior damage. When it comes to long/thin objects, the CLS can rotate anything up to 9 meters in length in and out of the door.
Here's a picture of a GE90-115 (sans fan) inside a 777F.