K-Kit includes cam, lifters, valve springs, valve locks, retainers, valve stem seals, timing set, assembly lube, instructions and decalsHydraulic - Magnum: Great for street machines. Use headers and 9:1+ compression. In 396-402 use 2500+ stall and lower gears. Rough idle.; 280/280 Advertised Duration, 230/230 Duration .050", .520"/.520" Lift, 110 Lobe Separation;