Ford FE 352-428
Advertised Duration: 265/265
Duration @ .050": 230/230
Valve Lift w/1.75 Rockers: .560/.560
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: .022/.022
1800-5800. Good street cam, broad power range, 2200+ stall recommended.

Ford FE 352-428
Advertised Duration: 275/275
Duration @ .050": 240/240
Valve Lift w/1.75 Rockers: .589/.589
Lobe Separation Angle: 108
Intake Centerline: 104
Valve Lash: .022/.022
2000-6000. Lopey idle, strong mid-range power & torque, 10.5:1 CR, 2500+ stall & 3.70-4.30 gear.

Ford FE 352-428
Advertised Duration: 281/281
Duration @ .050": 246/246
Valve Lift w/1.75 Rockers: .607/.607
Lobe Separation Angle: 108
Intake Centerline: 104
Valve Lash: .022/.022
2400-6400. Hot street/bracket, good mid-range performance, 10.5-12.0:1 recommended.

Ford FE 352-428
Advertised Duration: 287/295
Duration @ .050": 252/260
Valve Lift w/1.75 Rockers: .618/.624
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: .022/.022
2800-6800. Hot street/bracket, good mid & upper rpm torque & power, 11.5:1 CR, 3500+ stall.

Ford FE 352-428
Advertised Duration: 295/295
Duration @ .050": 260/260
Valve Lift w/1.75 Rockers: .648/.648
Lobe Separation Angle: 108
Intake Centerline: 104
Valve Lash: .022/.022
3000-7000. Pro street/bracket, strong top end, 3500+ stall, 11.0:1+ CR.