12 340 Springs with dampers
Cam Style:Mechanical flat tappet
Basic Operating RPM Range:1,800-5,600
Intake Duration at 050 inch Lift:220
Exhaust Duration at 050 inch Lift:220
Duration at 050 inch Lift:220 int./220 exh.
Advertised Intake Duration:256
Advertised Exhaust Duration:256
Advertised Duration:256 int./256 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.473 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.473 in.
Valve Lift with Factory Rocker Arm Ratio:0.473 int./0.473 exh.
Lobe Separation (degrees):110
Intake Valve Lash:0.022 in.
Exhaust Valve Lash:0.022 in