Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 272/272Duration @ .050": 224/224Valve Lift w/1.60 Rockers: .551/.551Lobe Separation Angle: 106Intake Centerline: 102Valve Lash: Hyd./Hyd.2500-6400. Lopey idle, good low end & mid-range horsepower & torque.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 272/272Duration @ .050": 224/224Valve Lift w/1.60 Rockers: .551/.551Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: Hyd./Hyd.2400-6600. Hot street cams, 4 barrel & headers recommended.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 272/272Duration @ .050": 224/224Valve Lift w/1.60 Rockers: .551/.551Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2400-6600. Good idle, good mid-range torque & horsepower. Needs 2400+ stall.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 279/279Duration @ .050": 225/225Valve Lift w/1.60 Rockers: .496/.496Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2400-5700. Needs good intake, 4bbl & headers, best with 9.5+ CR.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 279/285Duration @ .050": 225/231Valve Lift w/1.60 Rockers: .496/.512Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: Hyd./Hyd.2000-6400. Hot street performance in 385-418, 9.5:1, 2400 stall suggested.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 277/282Duration @ .050": 230/234Valve Lift w/1.60 Rockers: .563/.572Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: Hyd./Hyd.2600-6500. Lopey idle, broad power band, strong top end power.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 277/282Duration @ .050": 230/234Valve Lift w/1.60 Rockers: .563/.572Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2600-6600. Lopey idle, strong mid-range. Good throttle response, 2400+ stall.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 277/287Duration @ .050": 230/240Valve Lift w/1.60 Rockers: .563/.572Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: Hyd./Hyd.2800-6200. Lopey idle, hot street/brackets, 2500+ stall, 9.0:1+ CR.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 277/287Duration @ .050": 230/240Valve Lift w/1.60 Rockers: .563/.572Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2800-6400. Hot street & mild bracket racing.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 285/285Duration @ .050": 231/231Valve Lift w/1.60 Rockers: .501/.501Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: Hyd./Hyd.2600-6300. Broad power range, extra performance in smaller engine.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 285/285Duration @ .050": 231/231Valve Lift w/1.60 Rockers: .512/.512Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: Hyd./Hyd.3000-6500. Fair idle, broad power band, works well in heavy vehicles.
Ford Small Block 221-302 1963-1995 (Except 302 H.O.) Advertised Duration: 285/285Duration @ .050": 231/231Valve Lift w/1.60 Rockers: .512/.512Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.3000-6500. Strong power range from 3500 up. Needs 4bbl., header & stall.