Product Description Specifications Hydraulic - High Energy: Good upgrade for factory performance cams in 390-428. Noticeable idle.; 268/268 Advertised Duration, 218/218 Duration .050", .494"/.494" Lift, 110 Lobe Separation; Valve spring upgrade required CARB: This product is not CARB Legal and not for sale in California Category: Engine Components>Camshafts Core: N LTL: N MPN: 33-224-3 Proposition 65: Y Special Order: Y