Hemi Phase Limiter 5.7,6.1,6.4 Genlll

Powell Cams camshaft phaser limiter kits are specially designed, computer-controlled cam gears that automatically optimize camshaft timing based on the current engine rpm. The engine oil is pressure fed to the phasers through passageways in the cylinder heads and cams. The engine computer's control solenoids that adjust this oil flow into and out of the phasers' control chambers, give the ability to retard the cams. While this technology provides fuel efficiency and the ability to always be in the best position for maximum power, regardless of engine rpm, it does present some limitations when it comes to performance cams. With such a wide range of valve timing movement, there is very little piston to valve clearance, which limits you to small cam profiles with little overlap.