Competition Cams 20-223-3 Xtreme Energy XE268H-10 Camshaft for Small Block Chrysler Great for street machines, largest cam for stock converter, 273-318 works best with 2000 stall. 1,600-5,800 RPM Operating Range 224/230 Duration at .050". 110 Degree Lobe Separation Angle .477"/.480" Valve Lift Excellent performance in street carbureted applications. More vacuum allows an increase in duration for improved performance and assists power brakes. Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve. Best performance with aftermarket intake manifolds, headers and lower gear ratios. Fits Chrysler 273-360 Made in USA