PPE 110100111 01-04 GM 6.6L DURAMAX PORTED CAST IRON CYLINDER HEAD (ONE) LB7

The OEM Duramax cast-aluminum cylinder heads fall short over time - the differing heat expansion rates between the cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and/or cracking in high-performance applications where excessive heat is introduced.

PPE's new ported LB7 Cast Iron Cylinder Head is the ultimate upgrade for your Duramax engine, eliminating any concerns about head gaskets or cracking. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers superior fatigue strength, heat resistance, and creep resistance, significantly prolonging its lifespan.

The cast-iron material also shares the same heat expansion rate as the stock engine block, eliminating blown head gaskets. Additionally, the PPE Cylinder Head features cast-in fuel injector cups, solving the OEM injector cup leaking issue.

Our CNC porting process improves airflow, enhancing power, fuel efficiency, and throttle response while reducing engine stress and turbo lag. By smoothing the ports and maintaining wall thickness, these heads provide increased horsepower and torque without sacrificing reliability.

Tailored to each specific head, the CNC machining compensates for casting variations, ensuring consistent and optimized airflow dynamics. Whether you have a damaged aluminum cylinder head or seek better reliability and longevity for your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.

Important Note:

• The valve seats of the PPE Heavy Cast Iron Cylinder Heads are installed with an interference that maximizes the durability and lifespan of the cylinder heads. Such interference might not be optimal for extreme-performance applications where a significant amount of heat is created. For those applications, PPE suggests that the exhaust valve seats be replaced with higher interference (Plus 0.006 inch to Plus 0.008 inch) oversized exhaust valve seats (Nominal size 34mm).

The PPE 110100111 01-04 GM 6.6L Duramax Ported Cast Iron Cylinder Head is the essential upgrade for your Duramax engine, addressing the common flaws of OEM cylinder heads. Designed specifically for the LB7 engine, this high-performance cylinder head effectively eliminates head gasket failure and cracking, ensuring your engine runs smoothly even under demanding conditions.

Manufactured using top-grade alloyed gray iron, the PPE Cylinder Head boasts unparalleled fatigue strength and a perfect heat expansion match with the stock engine block. This means that you can leave worries about blown head gaskets behind. The cast-in fuel injector cups also resolve the typical leaking issues associated with OEM heads, making it a reliable choice for performance enthusiasts.

• Superior cast iron construction for enhanced durability and longevity
• Eliminates head gasket problems with matching heat expansion rates
• Improved airflow through advanced CNC porting for better performance
• Enhanced horsepower and torque without compromising reliability
• Fixed fuel injector cup design to prevent leaks
• Custom-tailored CNC machining for optimized airflow dynamics

No matter whether you have a worn-out aluminum head or want to boost the reliability of your Duramax engine, the PPE Cast Iron Cylinder Head is your go-to solution. Upgrade today to experience unmatched performance and peace of mind on the road!