Hello. i have a ford v6 capri engine which i have no idea what cc it is. how can i find out?

...there fitted with 2 types of engine...the 2.8 and 3.0...the 3.0 is known as the es engine the 2.8 is a german engine..i think the 2.8 is an injection enging the 3.0 ia a twin carbed engine....i like the 3.0 better..loovly lump...hope this helps