NoneApplication: Holden 253 304 308 C.I.D (Requires retrofit hardware) Cam Style Hydraulic roller tappet Basic Operating RPM Range . Intake Duration at 050 inch Lift . Exhaust Duration at 050 inch Lift . Duration at 050 inch Lift . int./. exh. Advertised Intake Duration . Advertised Exhaust Duration . Advertised Duration . int./. exh. Intake Valve Lift Factory Rocker Ratio 0. in. Exhaust Valve Lift Factory RockerRatio 0. in. Valve Lift Factory Rocker Ratio 0. int./0. exh. Lobe Separation (degrees) 0 Computer-Controlled Compatible No Grind Number 0 Valve Springs Required YES Quantity Sold individually.
