I pack and ship all the time. The 600lbs figure is close. I use tie dons and fully crate them. I've had the crates destroyed but the engine was fine. I use Forward Air. They have depots usually near airports, and you have to drop it off, pay cash or MO, and pick up from there. It's much cheaper. To your door will be the most $$, and someone has to be there when it happens to show up. Also, make sure you insure it! It cost $400 to crate and ship a shortblock from CT to CA. I'd expect about 4-500 bill for a complete longblock going roughly the same distance.