Ford FE 352-428 Advertised Duration: 299/299 Duration @ .050": 267/267 Valve Lift w/1.75 Rockers: .700/.700 Lobe Separation Angle: 110 Intake Centerline: 106 Valve Lash: .022/.022 4000-7600. Rough idle, good mid-range performance, 12.0:1+ CR, 4000+ stall. |