GM Expands Engine Lineup with Smaller and Turbocharged Options

General Motors is reportedly adding a new turbocharged 2.5-liter engine to its Cylinder Set Strategy (CSS) line of engines, which could be a downsized version of the L3B engine. There's no word on what it could power, but it's expected to be an all-aluminum, dual-overhead cam (DOHC), direct-injected inline-four with a single turbo. The L3B 2.7-liter engine could be replaced by this new engine, which is said to be in the final stages of development.