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