The Competition Cams 54-469-11 hydraulic roller camshaft is engineered for LS enthusiasts who want a dramatic jump in airflow, torque, and high-RPM horsepower from their rectangular-port LS engines. With .617" intake / .624" exhaust lift, 231°/247° duration @ .050, 281°/297° advertised duration, and a 113° LSA, this cam opens the valves deeper and holds them open longer than stock—transforming the way your LS breathes across the entire powerband. That high-lift profile pushes the valves into the most efficient part of the port, where LS3 and L92-style heads move the most air. This significantly increases cylinder filling, improves combustion efficiency and creates the harder-hitting, sharper-responding engine character that performance LS builds are known for. The extended duration keeps the valves open during peak port velocity, giving the engine a stronger pull from mid-range straight through the upper RPMs. Instead of flattening out as revs climb, the engine continues to gain momentum, making your LS feel lighter, faster, and more eager to rev. The 231°/247° @ .050 duration split is designed for aggressive performance without giving up real-world usability. On the street, this means the car feels quicker with every throttle input—more punch on acceleration, better passing power, and a snappier throttle feel. At wide-open throttle, the combination of long duration and high lift unlocks the true flow potential of rectangle-port heads, allowing the engine to produce serious horsepower in the 2,000–7,000+ RPM range. The 113° lobe separation angle provides the perfect balance of street manners and performance attitude. Idle quality has a pronounced, aggressive tone that announces the engine is far from stock, while still remaining tunable and manageable for street/strip setups. The engine feels more alive, more responsive, and significantly more powerful—everything an LS owner wants when upgrading to a true performance camshaft. In short, the Competition Cams 54-469-11 is the ideal cam for anyone building a rectangle-port LS looking for real, seat-of-the-pants performance gains. If you want harder acceleration, stronger mid-range, a more intense top-end charge, and the unmistakable sound of a true performance grind, this cam delivers transformative results.