Ford Big Block 429-460Advertised Duration: 301/309Duration @ .050": 269/277Valve Lift w/1.73 Rockers: .715/.715Lobe Separation Angle: 108Intake Centerline: 104Valve Lash: .022/.0224000-7800. 460+ CID, 11.0:1 Comp, strong mid to upper range horsepower.
Ford Big Block 429-460Advertised Duration: 311/315Duration @ .050": 279/283Valve Lift w/1.73 Rockers: .784/.727Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: .022/.0224800-8600. 12.0:1 min. modified heads, strong upper rpm.
Ford Big Block 429-460Advertised Duration: 301/303Duration @ .050": 269/271Valve Lift w/1.73 Rockers: .714/.721Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: .022/.0223800-7600. 460+ CID, 11.0:1 Comp, strong mid-range horsepower.