Chevrolet Small Block 262-400 Cam Series: Street Force Advertised Duration: 289/294 Duration @ .050": 235/241 Valve Lift w/1.50 Rockers: .488/.503 Lobe Separation Angle: 112 Intake Centerline: 108 Valve Lash: Hyd./Hyd. 2200-6400. Small Base Circle, Street Force 4, Lopey idle, good mid-range power. Needs 3200+ stall.