| GM LS Gen III/IV Three-Bolt; Hydraulic Roller; 2200-7200 RPM Range; 235 Degree Intake Duration @ 0.050 Inch Lift; 251 Degree Exhaust Duration @ 0.050 Inch Lift; 0.621 Inch Intake Valve Lift; 0.624 Inch Exhaust Valve Lift; 113 Degree Lobe Separation
HYDRAULIC ROLLER-Very strong from mid-range to high end torque and horsepower for LS engines with rectangular port cylinder heads. | 
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