Chevrolet Small Block 305-350Advertised Duration: 290/290Duration @ .050": 237/237Valve Lift w/1.50 Rockers: .560/.560Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2400-6400. Rough idle, street/strip, strong mid range, 10.0:1 CR, 2500+ stall.
Chevrolet Small Block 305-350Advertised Duration: 290/298Duration @ .050": 237/245Valve Lift w/1.50 Rockers: .560/.560Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2400-6400. Rough idle, street/strip applications, 10.0:1 CR, good exhaust, 3000+ stall.
Chevrolet Small Block 305-350Advertised Duration: 290/298Duration @ .050": 237/245Valve Lift w/1.50 Rockers: .560/.560Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2400-6500. Lopey idle, hot street & bracket racing, great mid-range, 10.0:1+ CR, 3000+ stall.
Chevrolet Small Block 305-350Advertised Duration: 294/300Duration @ .050": 241/247Valve Lift w/1.50 Rockers: .545/.565Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2600-6400. Rough idle, hot street & bracket racing, great mid range, 10.5:1+ CR advised.
Chevrolet Small Block 305-350Advertised Duration: 294/300Duration @ .050": 241/247Valve Lift w/1.50 Rockers: .545/.565Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2600-6500. Rough idle, bracket race with excellent mid & upper end horsepower.
Chevrolet Small Block 305-350Advertised Duration: 298/298Duration @ .050": 245/245Valve Lift w/1.50 Rockers: .560/.560Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2600-6600. Rough idle, street/strip, needs 3000+ stall, headers & good intake.
Chevrolet Small Block 305-350Advertised Duration: 300/304Duration @ .050": 247/251Valve Lift w/1.50 Rockers: .550/.540Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2600-6400. Hot street/brackets, requires aftermarket heads, 3500+ stall.
Chevrolet Small Block 305-350Advertised Duration: 300/306Duration @ .050": 247/253Valve Lift w/1.50 Rockers: .565/.580Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2800-6600. Rough idle, needs good heads, good upper mid-range, needs 3500+ stall.
Chevrolet Small Block 305-350Advertised Duration: 300/306Duration @ .050": 247/253Valve Lift w/1.50 Rockers: .565/.580Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2800-6600. Lopey idle, broad mid to upper mid range power, 3500+ stall.
Chevrolet Small Block 305-350Advertised Duration: 304/310Duration @ .050": 251/257Valve Lift w/1.50 Rockers: .555/.555Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2800-6700. Upper mid range & top end power, needs 11.0:1+ CR.