Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 275/282Duration @ .050": 228/234Valve Lift w/1.70 Rockers: .604/.609Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2400-7000. Hot street applications, needs aftermarket heads & intake, higher CR.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 278/280Duration @ .050": 230/232Valve Lift w/1.70 Rockers: .625/.625Lobe Separation Angle: 113Intake Centerline: 109Valve Lash: Hyd./Hyd.2400-7200. Competition, great mid range torque and power, good heads, 2500+ stall.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 278/294Duration @ .050": 230/246Valve Lift w/1.70 Rockers: .625/.625Lobe Separation Angle: 113Intake Centerline: 109Valve Lash: Hyd./Hyd.2000-7000. Hot street/strip, great mid range performance, best with aftermarket heads.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 283/284Duration @ .050": 232/234Valve Lift w/1.70 Rockers: .598/.598Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2200-7000. Street/strip performance, good throttle response, best with aftermarket heads.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 283/287Duration @ .050": 232/236Valve Lift w/1.70 Rockers: .598/.604Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2200-7000. Street/strip performance, good mid-range power, needs good heads.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 283/287Duration @ .050": 232/236Valve Lift w/1.70 Rockers: .598/.604Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2300-7100. Street/strip performance, good mid range power, needs good heads.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 280/284Duration @ .050": 232/236Valve Lift w/1.70 Rockers: .625/.625Lobe Separation Angle: 112Intake Centerline: 108Valve Lash: Hyd./Hyd.2200-7200. Fair idle, excellent mid-range performance, 2500+ stall, 10.5:1 CR, 3.70-4.20 gear.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 287/290Duration @ .050": 236/242Valve Lift w/1.70 Rockers: .612/.612Lobe Separation Angle: 110Intake Centerline: 106Valve Lash: Hyd./Hyd.2600-7200. Hot street/strip, great mid-range torque, 2800+ stall, 11.0:1+ CR, better heads/intake.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 287/290Duration @ .050": 236/242Valve Lift w/1.70 Rockers: .612/.612Lobe Separation Angle: 113Intake Centerline: 109Valve Lash: Hyd./Hyd.2600-7200. Large cubic inch, race only applications, needs aftermarket heads & intake, higher CR.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 287/290Duration @ .050": 236/242Valve Lift w/1.70 Rockers: .612/.612Lobe Separation Angle: 115Intake Centerline: 111Valve Lash: Hyd./Hyd.2600-7200. Large cubic inch, race only applications, needs aftermarket heads & intake, higher CR.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 288/295Duration @ .050": 240/248Valve Lift w/1.70 Rockers: .625/.625Lobe Separation Angle: 113Intake Centerline: 109Valve Lash: Hyd./Hyd.2800-7200. Broad top end power, needs aftermarket heads & intake, plus higher CR, good w/turbo.
Chevrolet Gen III/IV LS-Series 3-BoltAdvertised Duration: 290/290Duration @ .050": 242/242Valve Lift w/1.70 Rockers: .625/.625Lobe Separation Angle: 115Intake Centerline: 111Valve Lash: Hyd./Hyd.2800-7400. Competition, large cubic inch, needs aftermarket heads & intake, plus higher CR.