The advertised duration is 282 degrees intake, 290 degrees exhaust, as checked at .0029" tappet lift. Lobe lift is .3067" intake, .3236" exhaust. Gross valve lift with 1.6:1 rockers is .491" intake, .518" exhaust. With 1.7:1 rockers, it's .521" intake, .550" exhaust. Lobe separation is 114 degrees. The duration at .050" tappet lift is 226 degrees intake, 234 degrees exhaust. cam timing at .050" is: intake opens 4 degrees BTDC, intake closes 42 degrees ABDC, exhaust opens 56 degrees BBDC, exhaust closes 2 degrees BTDC.