Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 260/266Duration @ .050": 207/213Valve Lift w/1.60 Rockers: .480/.496Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.800-4200. Great daily usage, smooth idle, great fuel economy.
Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 262/268Duration @ .050": 209/215Valve Lift w/1.60 Rockers: .496/.501Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.1000-4400. Improved throttle response & low end torque.
Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 266/272Duration @ .050": 213/219Valve Lift w/1.60 Rockers: .517/.517Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.1000-4800. Fair idle, good low & mid range performance increase.
Ford Small Block 221-302 1963-1995, 351W 1969-96 Advertised Duration: 266/272Duration @ .050": 213/219Valve Lift w/1.60 Rockers: .517/.517Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.1000-5000. Good idle, off-road & street performance. 9.0:1 CR advised.
Ford Small Block 221-302 1963-1995, 351W 1969-1996Advertised Duration: 270/270Duration @ .050": 217/217Valve Lift w/1.60 Rockers: .496/.496Lobe Separation Angle: 113Intake Centerline: 109Valve Lash: Hyd./Hyd.1000-5500. Good idle, strong low end & mid range performance. Needs 2800+ stall.
Ford Small Block 221-302 1963-1995, 351W 1969-96 Advertised Duration: 270/278Duration @ .050": 217/225Valve Lift w/1.60 Rockers: .528/.533Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: Hyd./Hyd.1300-5600. Fair idle, good torque & power, 1800+ stall.
Ford Small Block 221-302 1963-1995, 351W 1969-96 Advertised Duration: 270/278Duration @ .050": 217/225Valve Lift w/1.60 Rockers: .528/.533Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.1300-5600. Good idle, good torque & power, 1800+ stall.
Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 270/278Duration @ .050": 217/225Valve Lift w/1.60 Rockers: .528/.533Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.1200-5600. Good idle, good torque & power, 1800+ stall.
Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 272/272Duration @ .050": 219/219Valve Lift w/1.60 Rockers: .544/.544Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.1800-5800. Fair idle, strong street performance, requires 9.0+ CR, 5-speed or 2800+ stall.
Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 272/278Duration @ .050": 219/225Valve Lift w/1.60 Rockers: .544/.533Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2000-6000. Performance street, best used with aftermarket heads, 2500+ stall, better intake/exhaust.
Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 272/278Duration @ .050": 219/225Valve Lift w/1.60 Rockers: .544/.533Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2000-6000. Good idle, good mid-range power, good vacuum, 9.5-10.5:1 CR, 2500+ stall.
Ford Small Block 221-302 1963-1995, 351W 1969-96Advertised Duration: 278/278Duration @ .050": 225/225Valve Lift w/1.60 Rockers: .533/.533Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2000-6000. Best with 5-speed or 2200-2500 stall.