High Performance CNC ported cylinder heads feature dyno
tested and flow bench proven ports, engineered for maximum usable
power. Each new cylinder head is ported on a 5 axis machine to ensure
consistency and perfect port shape. Additionally, larger
intake (+1mm) and exhaust valves (+1mm) are utilized to help increase
flow. Aftermarket CNC ported Big Valve cylinder heads usually come complete with a
performance valve job, hi rev (max 10,500rpm) valve springs with
titanium retainers and are ready to install. Perfect for high
performance applications and designed for excellent torque and turbo
response. Use with high performance camshafts for best
results.
- CNC Ported/Machine finished port
- Flow of Intake and exhaust increased
- 4-angle Inlet Valve job
- 3-angle & radius Exhaust Valve job
- Back-Cut Inlet Valves
- Heads are Ultra Sonic cleaned prior to assembly
- +1mm Intake Valves (1800 degrees max.)
- +1mm Exhaust Valves (2400 degrees max.)
- Performance Valve Springs
- Performance Retainers
- Hardened Steel Spring Platforms
- Knife edged port divider
- Combustion chamber volume increased
