I don't have the detailed event numbers handy for the "151" cam, but it's 221*/221* duration @ .050", .447"/.447" gross lift, 114* LSA, and 110* intake centerline. Very nice streetable cam with a 4-speed, zero-maintenance, still available from GM and from Federal-Mogul/Speed-Pro and Crane. Uses stock 85#/190# valve springs.