COMP Cams Camshaft Set F4.6 3V Mod. Bt2

Starting with a 242/262 degree intake/exhaust duration split, this Big Mutha' Thumpr NSR hydraulic roller camshaft from COMP Cams is built for serious performance gains in Ford 4.6L and 5.4L 3-valve modular engines. It's designed to unlock significant horsepower, especially when paired with a stroker motor, ported heads, and appropriate gearing. You can expect the most from this cam when revving up to 6800 RPM, making it a choice for those looking to push their engine's limits.

This camshaft is engineered to work with stock valve springs, but it does require an upgrade for the cam phaser system to ensure proper operation and longevity. For optimal performance and to handle the increased power output, COMP Cams recommends using it with 3.73 or numerically higher rear-end gears and a 2500 RPM stall torque converter. The rough idle characteristic is a direct result of its aggressive profile, signaling its intent for high-performance applications rather than daily driving comfort.

This camshaft fits a wide range of Ford, Lincoln, and Mercury vehicles, including popular models like the Ford F-150, Ford Mustang, and Lincoln Navigator. While it's designed for maximum power, be aware that it produces an extremely rough idle and is not CARB approved, meaning it cannot be shipped to California. If you're aiming for a substantial increase in engine performance and are prepared for the associated idle characteristics and supporting modifications, this cam is a well-built option.