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Product Description
Cosworth 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
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 high performance
applications
Features:
CNC Ported - New Castings
Hand blended finish work
Intake 26% (max) increased flow
Exhaust 18% (max) increased flow
4-angle Inlet Valve job
3-angle & radius 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
Fits: Mitsubishi Lancer Evolution VIII 2003-2005
Part # KK3672
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AMS Evo VIII Stroker Kit
