Engle Racing Performance Camshaft. These are supplied with full instructions and special lubricant for assembly. New Cam Followers must always be fitted with new camshafts. Engle camshafts require apre 1971 oil pump fitting with them. Please See Spec Below the choose the correct camshaft for your engine from the drop down box. W100, Valve Lift: 0.420 inches, Duration: 276 degrees W110, Valve Lift: 0.430 inches, Duration: 284 degrees W120, Valve Lift: 0.435 inches, Duration: 294 degrees W125, Valve Lift: 0.460 inches, Duration: 301 degrees W130, Valve Lift: 0.460 inches, Duration: 308 degrees