Cosworth G35 CNC Heads are ported cylinder heads dyno tested and flow bench proven ports, engineered for maximum real world power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev (max 10,500rpm) valve springs with titanium retainers and are ready to install. Perfect for big turbo applications or strong normally aspirated engines. Cnc VQ35 heads are priced for the pair. A flow chart for the head is available for download. Whether you're looking for all out engine performance modifications or simple bolt-on's, you have come to the right place. We specialize in Infiniti G 35 & G37 cnc performance parts. We offer a wide variety of performance exhaust systems, headers, lowering springs, turbo kits, body kits, and intakes for your Infiniti G. When making the decision to get your cnc heads for you G it can be confusing and you might want to not do the upgrade due to the time it takes to complete the install. Taking that into account you must understand that you are in search for serious horsepower RIGHT. Don't overlook installing performance cnc heads it is a must that you engine be equipped with the correct spec cnc heads in order to gain constant horse power and protect your Luxury Coupe investment. Coshworth CNC is the way to go.

•  CNC Ported/machine finished ports - New  OE Castings
• Hand blended  cnc finish work
• Intake 19% Increased Flow (max)
• Exhaust 22% Increased Flow (max)
• 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 logo
• +1mm Stainless Steel Intake Valves (1800 degrees max.)
• +1mm Inconel Exhaust Valves (2400 degrees max.)
• Performance Valve Springs
• Titanium Retainers
• Hardened Steel Spring Platforms
• Knife Edge cnc port divider