The New 4.2L Twin Turbo V8 Engine from General Motors

Authors

Dustin Gardner,
General Motors Company, Detroit, Michigan, USA;
Stephen Bowyer,
FEV North America, Inc., Auburn Hills, Michigan, USA

Summary

General Motors has a storied history with its Small-Block V8 architecture engines that are renowned for their performance, durability and refinement. Furthering GMs expertise in V8s, this paper describes an all-new 4.2-liter twin turbo, direct injected DOHC engine which is exclusive for use in the Cadillac CT6 V-Sport, for its top-ofrange sedan. The engine produces high power at top-end speed but was designed to provide an effortless driving feel by generating best-in-class torque at low and middle engine speeds. The result is an engine capable of meeting the needs of a high power performance sedan while simultaneously providing the crisp throttle response of a luxury automobile. This paper provides details of the new engine as well as highlights of individual technologies that support the balanced performance of this engine.

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