Pues aquí teneis el documento oficial extraido de la pagina de GM, en concreto de su seccion POWERTRAIN.

https://archives.media.gm.com/divisi...2005%20LSJ.doc

Cito:

OVERVIEW
The 2.0L SC engine is built exclusively at the FGP (Fiat-GM Powertrain) Kaiserslautern, Germany, engine-manufacturing facility. This plant uses a die-cast production technique that yields a block that is well suited for high-stress applications including turbocharging and supercharging. Variations of this block are also found in various Saab and Opel models. Compared to the original 2.2-liter Ecotec, the 2.0L SC features the same cylinder bore with a shorter stroke (94.6mm vs. 86.0mm). The shorter stroke helps the engine rev quickly and deliver lively throttle response.