Xtreme Energy™ 224/230 Hydraulic Flat Tappet Cam K-Kit for Chrysler 383-440 (Single-Bolt). Great for street machines. Slightly rough idle. Will work with a stock converter, but best with a 1800+ stall. Engine Family:Chrysler 383-440 c.i. 8 Cylinder (1959-1980) RPM Operating Range:1,600-5,800 Cam Type:Hydraulic Flat Tappet Lifter Style:Hydraulic Flat Tappet Camshaft Series:Xtreme Energy Usage:Street/Performance Camshaft Material:Cast Iron California Proposition 65:WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Advertised Intake Duration:268 Advertised Exhaust Duration:280 Intake Duration at .050 Inch Lift:224 Exhaust Duration at .050 Inch Lift:230 Intake Valve Lift:0.477 Exhaust Valve Lift:0.48 Lobe Separation:110 Assembly Lubricant Included:Yes