282°/286° high lift racing camshaft to suit 1JZ non-VVTi engine running alcohol based fuels and 72mm+ turbo. These high velocity cams require a shimless bucket or shim-under bucket conversion, such as the DLC coated bucket KCF-229. Cylinder head may require machining for clearance of high lift cam lobes. Kelford Cams recommend valve spring KVS109-1JZ-T.