Chrysler BB B/RB 383-440
Advertised Duration: 272/278
Duration @ .050": 219/225
Valve Lift w/1.50 Rockers: .510/.500
Lobe Separation Angle: 112
Intake Centerline: 108
Valve Lash: Hyd./Hyd.
1600-5600. Fair idle, street/mild bracket, good low to mid range, 2500+ stall, 9.5:1+ CR.

Chrysler BB B/RB 383-440
Advertised Duration: 282/288
Duration @ .050": 229/235
Valve Lift w/1.50 Rockers: .520/.530
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: Hyd./Hyd.
2000-6000. Fair idle, street performance/mild bracket, 2500+ stall, 9.5:1+ CR & aftermarket intake.

Chrysler BB B/RB 383-440
Advertised Duration: 282/288
Duration @ .050": 229/235
Valve Lift w/1.50 Rockers: .520/.530
Lobe Separation Angle: 112
Intake Centerline: 108
Valve Lash: Hyd./Hyd.
2000-6200. Mild lopey idle, street/mild bracket, good low to mid-range performance, 2500+ stall.

Chrysler BB B/RB 383-440
Advertised Duration: 288/294
Duration @ .050": 235/241
Valve Lift w/1.50 Rockers: .545/.545
Lobe Separation Angle: 108
Intake Centerline: 104
Valve Lash: Hyd./Hyd.
2500-6300. Rough idle, street/strip, good mid-range power, needs 3000+ stall, 9.5:1CR & headers.

Chrysler BB B/RB 383-440
Advertised Duration: 288/294
Duration @ .050": 235/241
Valve Lift w/1.50 Rockers: .545/.545
Lobe Separation Angle: 110
Intake Centerline: 106
Valve Lash: Hyd./Hyd.
2500-6400. Lopey idle, street/strip, good mid-range performance, needs 2800+ stall, headers.

Chrysler BB B/RB 383-440
Advertised Duration: 296/300
Duration @ .050": 243/247
Valve Lift w/1.50 Rockers: .600/.600
Lobe Separation Angle: 108
Intake Centerline: 104
Valve Lash: Hyd./Hyd.
2800-6600. Rough idle, pro street/bracket, strong mid range, 10.0:1+ CR, 3000+ stall & gears.