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Chevrolet Gen III/IV LS-Series 3-Bolt Advertised Duration: 292/300 Duration @ .050": 244/252 Valve Lift w/1.70 Rockers: .651/.625 Lobe Separation Angle: 110 Intake Centerline: 106 Valve Lash: Hyd./Hyd. 2600-7200. Large cubic inch, race only applications, needs aftermarket heads & intake, higher CR. |