COMP Hydraulic Roller Camshaft NSR Drift 233/243° @ .050", .541/.541" Lift, 114° Lobe Seperation (CO54-777-11)LS1 HYD ROLLER CAM, NSR DRIFT Suits GM LS1 Part Number: CO54 777 11 The COMP Cams No Springs Required Drift Cam is the first camshaft specifically designed for 4. 8 5. 3 LS swapped drift, road race and autocross cars. Along with major gains in power across the whole RPM range, excellent throttle response is achieved and valve train stability is maintained up to 7500 RPM by using the new LST (Low Shock Technology) lobe design. This stability keeps