S54 Stage 4 Turbo Ready Cylinder Head

Our Stage 4 Turbo Ready Cylinder Heads feature the following:

• Supertech Valve Spring Kit
• Supertech Stainless Steel Intake and Inconel Exhaust Valves (Stock Diameter)
• Exhaust Porting to Maximize Exhaust CFM
• New Valve Guides
• Valves Cut for Better Heat Transfer to Valve Seat
• Complete Disassembly & Cleaning
• Comprehensive Leak, Crack & Pressure Test
• Inspect All Components For Irregular Wear
• Our High performance Five Angle Valve Job
• New Valve Seals
• Trueness Checked & Resurfaced Mating Surface
• Unshrouding of Valves
• Attention to Potential Hot-spot Areas and Chamfering
  
  

Valve guides are replaced as part of the stage 4 cylinder head service.

As an option we can blend the throttle body ports to the intake valves and smooth out the CNC cuts on the intake side of the cylinder head. This is recommended when bored throttle bodies are being used.

• A Core cylinder head is required for all head work, please call or email if you will not be supplying us with a head for updated core market price.