COMP Cams Camshaft Set F4.6S XE278Ah-13

COMP Cams has built a reputation for making serious performance valvetrain parts, and this XE278Ah-13 camshaft set is a prime example for Ford Modular 2-valve engines with PI heads. If you're looking to get more out of your 4.6L or 5.4L engine for street and strip applications, this camshaft set is designed to help you achieve that goal. It's a hydraulic roller camshaft, meaning it uses roller followers to reduce friction and allow for more aggressive lobe profiles compared to flat tappet designs.

This particular camshaft features an intake duration of 242 degrees and an exhaust duration of 246 degrees, with a lift profile that requires a higher gear ratio and a stall converter of 2400 RPM or more to work effectively. You'll need to plan for custom tuning to get the most out of these cams, and be aware that they will result in a rougher idle than stock. The XE278Ah-13 is intended for enthusiasts who want to push their engine's performance envelope, and it fits a wide range of Ford, Lincoln, and Mercury vehicles, including popular models like the Ford Mustang, Crown Victoria, and Expedition.

When installing this camshaft set, remember that it requires custom tuning to optimize performance and drivability. It's also important to note that this part is not CARB approved and cannot be shipped to California. Ensure you have the necessary supporting modifications, such as the recommended gear ratio and stall converter, to properly utilize the camshaft's capabilities.