GM 6.6L Duramax Cast Iron Cylinder Heads

Las Vegas, NV — Pacific Performance Engineering, a leader in high-performance components, is proud to show Cast Iron Cylinder Heads for GM 6.6L Duramax engines. PPE's innovative design addresses the common shortcomings of OEM cast-aluminum cylinder heads, providing a superior solution for enhanced performance and durability.

The stock Duramax cast-aluminum cylinder heads often fall short in long-term reliability. Issues such as blown head gaskets arise due to the differing heat expansion rates between the cast-iron engine block and the aluminum cylinder head. Additionally, high-performance applications can lead to warping, melting, and cracking, jeopardizing the engine’s integrity.

PPE’s Cast Iron Cylinder Heads eliminate these concerns. Cast from high-quality alloyed gray iron, they offer exceptional fatigue strength, heat resistance, and crack prevention—significantly prolonging the cylinder head’s lifespan. Unlike aluminum heads, this cast-iron solution shares the same heat expansion rate as the stock cast-iron engine block, ensuring a secure seal and eliminating the risk of blown head gaskets. 

Cast Iron Ported Cylinder Heads

Key Features and Benefits:

• Enhanced Durability: Constructed from high-quality alloyed gray iron for superior heat and fatigue resistance.
• Improved Performance: CNC porting optimizes airflow, enhancing power, fuel efficiency, and throttle response while reducing engine stress and turbo lag.
• Reliability: Eliminates warping, melting, and cracking concerns in high-performance applications.
• Precision Engineering: CNC machining compensates for casting variations, ensuring consistent airflow dynamics and increased horsepower and torque without sacrificing reliability.

PPE’s CNC porting process not only smooths the ports but also maintains optimal wall thickness, creating a balance between durability and performance. Each cylinder head is tailored to specific engine requirements, ensuring a perfect fit and optimal performance for your Duramax engine. Whether you’re replacing a damaged aluminum cylinder head or upgrading for improved reliability and longevity, PPE Cast Iron Cylinder Heads are the ultimate solution for Duramax enthusiasts.

Applications & Product Links:

2001-2004 GM 6.6L Duramax Cast Iron Cylinder Head (One) LB7
2001-2004 GM 6.6L Duramax CNC Ported Cast Iron Cylinder Head (One Head) LB7
2011-2016 GM 6.6L Duramax Cast Iron Cylinder Head (One) LML