We start with the best in class EMPI GTV-2 Cylinder head casting and let a 5 Axis CNC Mill work it's magic to increase flow. Resulting in the best bang for your buck in increased horsepower. Our programs cut the Intake, Exhaust and Chamber with CNC precision. You now have a smooth, ready to bolt on finished head. The GTV-2 Cylinder Head casting eliminates the need for any welding €“ even with our massive Stage 3 port. Features stainless steel valves, racing valve seats, bronze valve guides, new 4037 Hi-Performance Dual Valve Springs, chromoly retainers, hardened keepers, gaskets, rocker and exhaust and intake studs. Complete with a professional performance valve job & assembly. Lash Caps P/N 4006 are required in all cylinder head applications that have stainless steel valves.