274°/270° split lobe high lift cams. Good balance between throttle response and high rpm power with a large turbo. Suits 62mm-72mm turbo. Great with E85. Ideal for well built engines with +1mm valves and ported head. Reduced base circle diameter. Cylinder head requires machining for clearance of high lift cam lobes. Kelford Cams recommend valve spring KVS1855-BT.