Maximize Volumetric Efficiency: Precision 5-Axis CNC Ported Cylinder Heads
To achieve the highest power potential on the Mercedes-AMG 4.0L Biturbo platform, optimized airflow through the cylinder heads is a mechanical necessity. The M178 CNC Ported Heads, as seen in image_0d26a6.jpg, are precision-engineered and fully blue-printed for extreme duty applications. The engine build team at Premier Tuning Group performs a complete overhaul of your M177/M178 heads, transforming the factory ports into high-velocity channels capable of a staggering 24%+ increase in CFM flow.
This isn’t just a basic rebuild; it is a total performance transformation. By completely reshaping the port geometry, PTG enhances engine breathing for both naturally aspirated and forced induction setups. This results in significantly improved throttle response, increased top-end power, and the structural reliability required for high-boost racing environments.
Comprehensive Engineering and Blue-Printing Process
Every set of cylinder heads undergoes a scrutinizing multi-stage process to ensure world-class quality and performance:
- Precision CNC Porting: 5-Axis CNC machining of both intake and exhaust ports for absolute symmetry and flow optimization.
- Performance Valve Job: A specialized five-angle valve job to ensure a perfect seal and maximized low-lift flow.
- Structural Refinement: Heads are clean-decked to ensure perfect straightness for a flawless head gasket seal.
- Internal Component Verification: Includes a full health check of the head, high-pressure cleaning, valve height measurement, and a chamber CC check to ensure balanced compression across all cylinders.
- Professional Reassembly: Final assembly is completed with new OEM valve seals and a comprehensive check of all springs and valves.
Technical Specifications & Benefits:
- Flow Increase: 24%+ CFM Flow @ .550″ Lift (tested with 2.0″ Exhaust Pipe).
- Machining: 5-Axis CNC Ported Intake & Exhaust Ports.
- Valve Work: High-performance Five Angle Valve Job.
- Straightness: Clean Decked surfaces for maximum sealing integrity.
- Service Requirement: This product requires a core exchange.
- Note: Depending on core quality, some heads may require new valves, springs, or locks at an additional cost.
Vehicle Fitment Guide:
This elite cylinder head service is designed for the Mercedes-Benz M177 and M178 4.0L V8 engine platforms:
- 2015–2021 Mercedes-AMG GT / GT S (C190/R190)
- 2017–2021 Mercedes-AMG GT C / GT R (C190/R190)
- 2021+ Mercedes-AMG GT Black Series (C190)
- Compatible with various M177-equipped AMG models (C63, E63, etc.)
Tags
PTG CNC ported heads, M178 cylinder heads, AMG GT performance engine, M177 head porting, Mercedes 4.0L biturbo power, 5-axis CNC machining, five angle valve job, high flow cylinder heads, C190 engine build, R190 performance parts, engine blue-printing, Premier Tuning Group, AMG GT R engine mods, 1000HP AMG GT internals.
