I have looked into this engine weight thing. Its not as clear cut as the written word would have you believe. A rover v8 is pretty much supposed to be around 318lbs , this would disagree,
http://www.v8register.net/subpages/v...dimensions.htm.
Some of these weights advertised are complete with all ancillaries, some are just long blocks and others are inc fluids ect so I think you have to find out for yourself. I will be weighing my unit with all its stuff fitted just so I know what i have. Also some of the engines have massive cooling systems which is all extra weight.
Bob