HEATON, anywhere on the part's label or crate box does it say GMPTEPNY or GMPTENY or GMPTE?
if so, you my friend are one of the lucky SOB in the US, who has a US spec LNF motor with a European spec block.. the casting on this block is 3x better than the original LNF casting.. you are one lucky dude!!
Since last march the GM Powertrain Tonawanda Engine Plant in Tonawanda, NY released US spec LNF engines with a Euro spec block either for consumer purchase and warranty work.. because GM retooled the ECOtec production line for the LHU, LDK and other ECOtec [US/SA/EURO/SEA] engines as well..
Since then, all US spec LNF engines will have the Euro spec block in them.. I'll lov to have one but at $3600 for new engine.. maybe down the road if my current engine takes a dump..