Full Race Cam developed by David Vizard, ground on a new Kent blank. Slot drive. 300/300 degrees duration. Cam lift .339". Use with 1.5 rockers, race head and 13+:1 CR. RPM range 4000-9000. Ground using new masters which are ground on a CNC grinder to design data which is also generated here,unlike some grinders who copy cams to make masters (which all cam grinders are designed to do by the way, and its great when you want to regrind one lobe on an old tractor cam that only runs at 1500RPM). The masters used for this range of cams are designed with the same basic lift and duration figures as have been used, but have been made a lot smoother which lowers the peak jerk numbers due to smoother positive and acceleration numbers. The nose radius has also been increased because this is the area of highest stress. They are rifle drilled then cross drilled to provide oil for each lobe. We recommend a drop of Loctite Hydraulic thread sealant on the threads of the plug upon installation.