| GM LS Gen III/IV Three-Bolt; Hydraulic Roller; 2500-7200 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; 115 Degree Lobe Separation
HYDRAULIC ROLLER-Good high rpm power when used with a centrifugal blower. | 
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