Cleetus McFarland "Bald Eagle" LT Stroker Boost CamCam Specs: 233 242, . 635 . 635, 114 LSA, 111 ICL, +32% Fuel Lobe The gen 5 LT1 engine utilizes Variable Valve Timing (VVT) controlled via a cam phaser. A cam phaser is a computer controlled cam gear that automatically optimizes camshaft timing based on the current engine RPM. While this technology provides tremendous efficiency benefits, it presents a challenge when designing performance cams due to the wide range of valve timing movement and