Selecting a camshaft for a given engine’s purpose usually involves a compromise between low- or high-end power options. This is true for normal aspiration as well as boosted applications. The lobe separation angle (LSA) is one of those factors where engine builders have to make a choice between those priorities. LSA measures the angle (in degrees) between the maximum lift points, or centerlines, of the intake and exhaust lobes. Thus, it directly affects the amount of valve overlap; that is the brief period of time when both the intake and exhaust valves are open. If they're not open for sufficient time, air flow suffers at mid to high rpms. Keep both open for too long and boost escapes out the exhaust.
This is the cam that starts to transform what a "2.slow" is thought to be all about. A 276° will deliver outstanding middle to high-rpm power for normally aspirated street and mild race (3500 - 7000). Torque is softened measurably at lower engine speeds but not to the point that driveability is "hurt". Overall engine character is transformed. Head flow work is hugely beneficial for maximizing peak gains. Idle will lope but not stumble. Specifications are 234° @ .050", .449" lift, 110° lobe centers.
Note: Heavy-duty valves spring required for OBDII 2.0l 8v ('95+) engines.
