A few facts about LTL
You can call around and get quotes but sometimes it is better to go threw a broker like Unishippers; freightquote; or even Schneider. They get way better pricing from volume and can sometimes beat what the LTL carrier will quote you because of less mark up.
Things like lift gate; residential; farm; appointment needed; Inside garage; redelivery cause no one was home; weighing shipment; can all be mark up charges over and beyond the quote if you do not tell them up front. They will hold your freight hostage till all charges are paid. If you fall into any of the above you might be better off dropping off and picking up the engine at the trucking terminal.
Pack the engine well. Strap it tightly to a pallet or even build a crate for it. You are paying by the pound shipped so do not go over board but if you want it to arrive in one piece pack it well. To the driver and dock worker it is just another pallet. They could care less. And if it gets broken you will find out about the dark side of LTL. Claims are paid at XX per pound no matter what the replacement cost is. Right on the bill of lading you sign at pickup it will state that claim liability may be limited.