Very strong from mid-range to high end torque and horsepower for LS engines with cathedral port cylinder heads. 2,200-7,200 RPM Operating Range 235/243 Duration at .050". 113 Degree Lobe Separation Angle 0.621/0.624 Valve Lift Cathedral Port Grinds - The LSR Cathedral Port camshaft series was designed specifically for the flow characteristics of LS1/LS2/LS6 design heads. Whether you have a 4.8L or 400+ C.I. LS, this series has grinds for any LS build. Broad Powerband - Featuring a higher exhaust duration, wider lobe separation and more valve lift, the COMP Cams LSR series takes full advantage of the LS high flow cylinder heads. Fits GM LS GEN III/IV LS. 3-Bolt Configuration. Made in USA