454C

454C is a designation that can refer to several different entities, most notably a specific engine model and a geological time period.

In the automotive industry, the 454C is a variant of the Chevrolet big-block V8 engine. This engine, often referred to as the 454, is a 7.4-liter displacement internal combustion engine. The "C" designation often indicates specific configurations or applications, such as those found in heavy-duty trucks or marine applications. These engines are known for their torque and power output, making them suitable for towing and performance applications. While originally produced by Chevrolet, various aftermarket companies have continued to produce and modify versions of this engine.

In geology, the 454C designation refers to a specific interval within the geological timescale. This notation is part of a larger system used by geologists to subdivictide Earth's history. The number typically represents millions of years ago, and the letter often denotes a specific chronozone or sub-epoch. While the precise definition of "454C" can vary depending on the specific stratigraphic context and the geological timescale being referenced, it generally points to a period within the Cenozoic Era or potentially earlier geological periods, depending on the classification system in use. This interval would be characterized by specific rock strata, fossil assemblages, and environmental conditions.