HM: "The last word in performance solid lifter cams. This cam runs strong after 3000 rpm and peaks at 6800 rpm, netting a 13 horsepower gain. The profile is 11.2mm lift with a 286 degree duration measured (the European way) at 0.1mm check clearance. Translated, this is 0.436 inches lift and 243 degrees of duration at 0.050" check clearance. The AUTOTECH Sport 286° solid lifter cam works best on injected cars that are already extensively modified. This cam requires the use of SportTuned Valve Springs. Lifetime warranty."