The 442 is not a size of an engine. 442 is a model of car produced by Oldsmobile, an American automobile manufacturer, based on the Oldsmobile Cutlass platform from 1964 to 1987, and revived from 1990 to 1991 and for the 2004, 2005, and 2007 model years.
Therefore, it is a model name rather than an engine size.