4AGE-16V High Lift Cams for high RPM drag racing engines. Suits turbo sizing 48-58mm. Great with E85. 'HV' high velocity cam profile, more cam sweep area than the stock shim will allow. Must convert to shimless or shim under bucket style lifter. Kelford Cams recommends KVS101-BT valve spring._x000D_\n_x000D_\n
