Ford FE 352-428
Advertised Duration: 291/295
Duration @ .050": 237/241
Valve Lift w/1.75 Rockers: .569/.548
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: Hyd./Hyd.
2600-6200. Dual purpose street/strip, strong mid-range to top end torque & horsepower.

Ford FE 352-428
Advertised Duration: 291/295
Duration @ .050": 237/241
Valve Lift w/1.75 Rockers: .569/.548
Lobe Separation Angle: 112
Intake Centerline: 108
Valve Lash: Hyd./Hyd.
2600-6200. Fair idle, street performance, good mid-range horsepower, 10.0-11.5:1 suggested.

Ford FE 352-428
Advertised Duration: 295/295
Duration @ .050": 241/241
Valve Lift w/1.75 Rockers: .548/.548
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: Hyd./Hyd.
3000-6400. Rough idle, runs strong 3500 rpm up, needs compression, needs headers.

Ford FE 352-428
Advertised Duration: 297/307
Duration @ .050": 243/253
Valve Lift w/1.75 Rockers: .592/.548
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: Hyd./Hyd.
3400-6600. Lopey idle, good mid range power, needs 3200+ stall.

Ford FE 352-428
Advertised Duration: 301/301
Duration @ .050": 247/247
Valve Lift w/1.75 Rockers: .595/.595
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: Hyd./Hyd.
3400-6700. Pro street/brackets, strong mid & upper end power, 10.0:1+ CR.