Every Lambda Raceworks cylinder head is hand ported and precision blended to improve airflow, reduce restriction, and increase cylinder filling efficiency throughout the RPM range. Our porting process focuses on radius shape, valve bowl transitions, throat sizing, and runner consistency while maintaining reliability for real world racing.
Stage 1 Street Port
* Intake and exhaust bowl blending
* Radius optimization
* Runner cleanup and casting flaw removal
* Valve seat blend
* Designed for stock and hybrid turbo applications
Benefits
* Improved throttle response
* Faster turbo spool
* Increased midrange torque
* Improved airflow consistency 
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Stage 2 Performance Port
* Extensive intake and exhaust runner reshaping
* Enlarged throat and bowl area
* Aggressive radius development
* Hand finished runner transitions
* Recommended for hybrid and upgraded turbo systems
Benefits
* Increased peak airflow
* Higher horsepower potential
* Improved high RPM breathing
* Reduced pumping losses under boost
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Race Port & Polish
* Maximum airflow development
* Fully hand shaped intake and exhaust runners
* Chamber blending and deshrouding
* Competition focused port design
* Polished for additional edge in reducing drag.
Benefits
* Maximum horsepower capability
* Increased airflow at all valve lifts
* Improved volumetric efficiency
* Optimized for high boost and race fuel combinations
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Why Ported Heads Matter
Factory cylinder heads are designed around cost, emissions, and manufacturing limitations. Hand porting removes airflow restrictions and improves the path air takes into and out of the combustion chamber.
Typical results include:
* Faster turbo response
* Increased airflow capacity
* More power per PSI of boost
* Lower exhaust backpressure
* Greater top end power
* Improved engine efficiency
Every Lambda Raceworks head is individually hand ported and inspected to ensure consistent results for serious performance applications. Heads are machined, valves relapped and heads are pressure tested before being sent back or installed.