This is a great grind for a performance 455 with emphasis on street manners. A real sleeper/shoot out type cam. Duration at .050 is 230/240 Check the T/A catalog for specifics. This cam is nearly new, only a few hundred miles of use. Had to pull motor for thrust bear repair and decided to go a different direction. This cam was purchased from Trishield Performance and I paid extra to have Jim break it in correctly on test stand and ensure quiet operation. Also included is the 16 lifters that are marked for correct replacement order and are the high quality ones. This is a great cam, basically new at a nice price. Located in San Jose CA. Price is $200 shipping included via UPS ground to lower 48 states Thanks for looking. Jerry