Meet the Hellcat Engine

May 21st, 2018 by


The Dodge Challenger, Charger, Jeep® Grand Cherokee, and new Ram 1500 Rebel® TRX are all available with a mighty version of the famous supercharged HEMI® engine known as the “Hellcat V8.” Its name is derived from the Grumman World War II fighter plane, whose engines were built by a company that Chrysler would later purchase, and which destroyed more enemy aircraft than any other Allied naval planes. But what makes the Hellcat V8 worthy of bearing that name?


The performance of a Hellcat V8-equipped vehicle relies on other factors, such as weight, traction, and transmission. For example, the Jeep® Grand Cherokee is predictably slower than the Dodge Challenger. Nonetheless, the mere presence of a Hellcat V8 under the hood tends to make its bearer the fastest thing there is in its class.

To stick with the fighter plane inspiration, Hellcat-equipped vehicles also come with two power modes, dictated by which key fob you use: “street” and “kill.” The former, activated by a black fob, limits the engine to 500 horsepower, ensuring you don’t accidentally miss your stop or go into a tailspin by leaning too heavily on the throttle. The kill mode, activated by the red fob, unlocks the engine’s full 707 horsepower.


One of the main feature of the Hellcat V8 is the supercharger. With a boost pressure of up to 11.6 psi, a maximum speed of 14,600 rpm, and a drive ratio of 2.36:1, the supercharger provides the V8 engine with even more on-throttle power and gives every Hellcat vehicle that distinctive engine whine on acceleration.


The Hellcat V8’s tremendous capabilities require tremendous cooling. To provide this, a low-temperature circuit with two air/coolant heat exchangers were integrated into the supercharger housing, permitting up to 30,000 liters of sub-140-degree air to flow through the engine even under extreme conditions. That allows the engine to continue cranking out its maximum power even after dozens of laps around your favorite summer circuit.

The Hellcat engine is one that must be experienced to be believed. While you can get that experience by watching—and listening to—a Hellcat-equipped Dodge, Jeep®, or Ram vehicle take off, there’s no better method than getting behind the wheel of one for yourself. To make this happen, talk to the team at Paulding CDJR.

Posted in CDJR Features