Lunati XXX12232HLK Bootlegger Hydraulic Cam/Lifter Kit Bootlegger hydraulic cam and lifter kit 277/304 Advertised Duration, 232/244 Duration at .050", .500"/.500" Lift, 108 Lobe Separation 2800-6000 RPM range Great mid to top end power. Choppy idle. 10:1+ compression recommended. Works well with 3000 stall and 3.73 rear gear