The camshaft is from Crane, P/N CHB 8450001, and carries 250 @ .050 (intake), 254 @ .050 on the exhaust. Lift is 612-inch with a 1.7:1 rocker, and the exhaust is .624. Lobe centers are 108 degrees. Engine Masters rules limit the lifters to stock diameter, so know these cam specs would be fine for anyone beefing up an overbored 454 big-block Chevy for serious street use. The cam is only one part of the equation, of course, but if you've got heads flowing near where Shaver's do, this cam is a killer.