American Muscle 1963 - 1977 Ford 352-428 Hyd Flat Tappet 1100 to 4800 Camshaft All Howards Cams use the highest-grade race quality cores available. All hydraulic and mechanical flat tappet camshafts are 100% Rockwell checked and Parkerized to ensure the highest quality control standards available anywhere. Howards Cams are manufactured on dedicated high precision CNC cam grinding machines. Most Howards Cams are packaged and shipped in our unique, hard, high impact plastic reusable cases. This ensures that the high quality camshaft that went into the case comes out in the same condition, when delivered, as when it was packed. Lift: .487 / .496, Duration @ .050: 206 / 220, Centerline: 105, American Muscle, Near duplicate of the Ford 390 GT 335HP/390 cam (FMC #C6OZ-6250-B).