I've used Old Dominion alot for motorcycle engines that run 150-200 lbs. They have about the best rates overall imo. If you can ship from a business address it can help. Most of the carriers have a upcharge for residental pickup. R&L Carries, Estes are a few others along with the big players Fed Ex and UPS.
You can get most estimated costs online using their shipping calculators and they all have a cust service # you can call to get a quote. Hope this helps!
Todd