B Series racing cams. Large low lobe spec for improved torque in lower RPM range. Super strong midrange power, rough idle on plenum manifolds. Primary & Secondary lobe specifications are: Intake 270 & 270 / Exhaust 262 & 262 Degrees advertised duration. Intake 11.00mm & 11.00mm / Exhaust 10.00mm & 10.00mm lift.