Cosworth CNC Ported Cylinder Head 350Z/G35 VQ35DE

SKU: 05CNZ | MPN:  KK3918
Sale price$4,827.24 USD Regular price$4,876.00 USD
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Cosworth VQ35 CNC ported cylinder heads features dyno tested and flow bench proven ports, engineered for maximum real power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Larger intake and exhaust valve by 1mm. Cosworth CNC ported big valve cylinder heads comes complete with a performance valve job, that can rev up to 10,500 rpm. Perfrect for big turbo applications or strong normally aspirated engines. Cylinder headers are priced for the pair. Here is the list of items that are done to the cylinder head:

  • CNC Ported/machine finished ports - New OE Casting
  • Hand blended finish work
  • Intake 19% Increased flow
  • Exhaust 22% Increased flow
  • 4 angle Inlet valve job
  • 3 angle  &  radiused exhaust valve job
  • Valves are lapped
  • Back-Cut Inlet Valves
  • Heads are ultra sonic cleaned prior to assembly
  • Heads are serialized and sport a machined Cosworth log.
  • +1 mm Stainless Steel Intake Valves
  • +1 mm Inconel Exhaust valves
  • Performance valve springs
  • titanium retainers
  • hardened steel springs platforms
  • knife edge port divider


Vehicle Fitments:

Year Make Model Submodel
2003 - 2008 INFINITI G35 Base
2007 - 2008 INFINITI G35 Sport, Journey
2004 - 2008 INFINITI G35 X
2008 INFINITI G35 X Sport
2005 Nissan 350Z 35th Anniversary Edition
2003 - 2008 Nissan 350Z Base
2003 - 2009 Nissan 350Z Enthusiast, Touring
2005 - 2009 Nissan 350Z Grand Touring
2007 - 2008 Nissan 350Z Nismo
2003 - 2005 Nissan 350Z Performance
2003 - 2006 Nissan 350Z Track

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