TOMEI 4G63 EVO PROCAM CAMSHAFT EXHAUST & INTAKE Cam Angle : 260o Cam Lift : 10.2, 10.7 11.50 mm Procam: Derives highest performance of the engine combined with the best tuning abilities for specific settings required in professional racing. Design Targets *Reduce Turbo spool time *Increase horse power & torque throughout usable power band *Simple installation can retain standard valve train *Securing effective area of the valve *Improve drivability Characteristics This product requires other engine parts to be upgraded. Special valve springs, solid lifters, and adjustable shims are required.