Voodoo Hydraulic Roller Swinging Follower - Ford 4.6L & 5.4L Modular 4 Valve 279/283

Hydraulic Roller Swinging Follower Cam Set. Max effort street/strip cams with blower or nitrous. ;Advertised Duration (Int/Exh): 279/283 ;Duration @ .050 (Int/Exh): 241/245 ;Gross Valve Lift (Int/Exh): .550/.550 ;LSA/ICL: 115/113 ;Valve Lash (Int/Exh): Hyd/Hyd ;RPM Range: 2000-6600 ;Includes: Cams Only