Standard Corvette engine is now LT1, with AFM (cylinder deactivation). Not sure where it's built.
Standard SS engine is LS3, without AFM. Made in Mexico and perhaps other locations. LS3 never has had AFM.
See this link for details:
Vehicle Engines Introduction
Go to right side of page, select 2013 or 2014 product guide--states all specs, including build sites, for each engine & transmission.
Window sticker for vehicle contains country of origin for specific major components (engine & trans) and provides "domestic content" information, but I don't know if that's a US-only rule, even if a vehicle is built in one country then sold in another--in other words, in the case of the SS, does "domestic" content mean for the country of manufacture (Oz) or where it's sold (US, in this case)?