Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 295/301 Duration @ .050": 248/254 Valve Lift w/1.60 Rockers: .605/.625 Lobe Separation Angle: 108 Intake Centerline: 104 Valve Lash: Hyd./Hyd. 3400-7000. Rough idle, pro street/strip, strong upper end power, needs good heads, 3500+ stall. |