{"title":"Engine Cylinder Head","description":null,"products":[{"product_id":"2001-2004-gm-6-6l-duramax-cast-iron-cylinder-head-one-lb7","title":"2001-2004 GM 6.6L Duramax Cast Iron Cylinder Head (One) LB7","description":"\u003cp\u003e50 States Emissions Legal (E.O. D-701-38) The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between 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.\u003c\/p\u003e\u003cp\u003ePPE's new LB7 Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine and eliminates any head gasket or cracking concerns. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers elevated fatigue strength, and heat and creep resistance, which prolongs the cylinder head's lifespan significantly.\u003c\/p\u003e\u003cp\u003ePPE Cylinder Heads also share the same heat expansion rate as the stock cast-iron cylinder block no more blown head gaskets. PPE LB7 Cylinder Heads also feature cast-in fuel injector cups and solve the OEM injector cup leaking issue.\u003c\/p\u003e\u003cp\u003eEach head comes complete with upgraded valve train components. All valves are made of superior materials and fully nitridated. The tapered valve springs' higher spring rate and lighter retainers\/locators enable faster response during higher RPMs and eliminate valve float. Powder metal valve seats provide superior wear and heat resistance. The denser and stiffer material properties from the cast-iron construction also significantly reduce engine clatter.\u003c\/p\u003e\u003cp\u003eWhether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.\u003c\/p\u003e\u003cp\u003eDuramax Iron Heads Upgrade: Diesel World\u003c\/p\u003e\u003cp\u003eUnboxing PPEs new Duramax cylinder heads!: LinCo Diesel Performance\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eSpecifications:\u003cbr\u003e\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eAsia Pacific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold As\u003c\/td\u003e\n\u003ctd\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e840171222548\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailability\u003c\/td\u003e\n\u003ctd\u003eAvailable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"PPE Diesel","offers":[{"title":"Default Title","offer_id":45990847381711,"sku":"HFTD_110100101","price":1349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0649\/3896\/7247\/files\/110100101-HFTD.jpg?v=1788359808"},{"product_id":"2004-5-2010-gm-6-6l-duramax-cast-iron-cylinder-head-one-lly-lbz-lmm","title":"2004.5-2010 GM 6.6L Duramax Cast Iron Cylinder Head (One) LLY\/LBZ\/LMM","description":"\u003cp\u003e50 States Emissions Legal (E.O. D-701-38). The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between 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.\u003c\/p\u003e\u003cp\u003ePPE's new Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine and eliminates any head gasket or cracking concerns. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers elevated fatigue strength, heat, and creep resistance, which prolongs the cylinder head's lifespan significantly. PPE Cylinder Head also shares the same heat expansion rate as the stock cast-iron cylinder block no more blown head gaskets.\u003c\/p\u003e\u003cp\u003eEach head comes complete with upgraded valve train components. All valves are made of superior materials and fully nitridated. The tapered valve springs' higher spring rate and lighter retainers\/locators enable faster response during higher RPMs and eliminate valve float. Powder metal valve seats provide superior wear and heat resistance. The denser and stiffer material properties from the cast-iron construction also significantly reduce engine clatter.\u003c\/p\u003e\u003cp\u003eWhether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.\u003c\/p\u003e\u003cp\u003eNote 1: Requires the use of LBZ\/LMM glow plugs on LLY engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDuramax Iron Heads Upgrade:\u003c\/strong\u003e Diesel World\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eSpecifications:\u003cbr\u003e\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eAsia Pacific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold As\u003c\/td\u003e\n\u003ctd\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e840171222340\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailability\u003c\/td\u003e\n\u003ctd\u003eAvailable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"PPE Diesel","offers":[{"title":"Default Title","offer_id":45990847447247,"sku":"HFTD_110100103","price":1349.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0649\/3896\/7247\/files\/110100103-HFTD.jpg?v=1788359817"},{"product_id":"cylinder-head-one-cast-iron-gm-6-6l-duramax-2004-5-2010-lly-lbz-lmm-ported-pacific-performance-engineering","title":"Cylinder Head (One) Cast Iron - GM 6.6L Duramax 2004.5-2010 LLY\/LBZ\/LMM Ported Pacific Performance Engineering","description":"\u003cp\u003eThe OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between 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.\u003c\/p\u003e\u003cp\u003ePPE’s new ported Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine and eliminates any head gasket or cracking concerns. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers elevated fatigue strength, heat, and creep resistance, which prolongs the cylinder head’s lifespan significantly. PPE Cylinder Head also shares the same heat expansion rate as the stock cast-iron cylinder block - no more blown head gaskets.\u003c\/p\u003e\u003cp\u003eOur 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 a desire for better reliability and longevity on your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImportant Note:\u003c\/strong\u003e 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 (+0.006 inch to +0.008 inch) oversized exhaust valve seats (Nominal size 34mm).\u003c\/p\u003e\u003cp\u003eRequires the use of LBZ\/LMM glow plugs on LLY engines\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecially alloyed gray cast iron liquid-cooled cylinder head\u003c\/li\u003e\n\u003cli\u003e5-Axis CNC ported intake and exhaust ports for smooth, unrestricted airflow\u003c\/li\u003e\n\u003cli\u003eIncreased thermal efficiency compared to aluminum heads\u003c\/li\u003e\n\u003cli\u003eReduced noise and vibration, better ride\u003c\/li\u003e\n\u003cli\u003eEliminates head gasket scrubbing issue (blown head gasket)\u003c\/li\u003e\n\u003cli\u003eHigher fatigue strength and heat resistance\u003c\/li\u003e\n\u003cli\u003ePremium 21-4N, Stellite-reinforced exhaust valves\u003c\/li\u003e\n\u003cli\u003eFully nitridated valves, better abrasion resistance\u003c\/li\u003e\n\u003cli\u003eReady to install - comes with all valvetrain components, rocker arm dowels, and freeze plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003eSpecifications:\u003cbr\u003e\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eAsia Pacific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold As\u003c\/td\u003e\n\u003ctd\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailability\u003c\/td\u003e\n\u003ctd\u003eAvailable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"PPE Diesel","offers":[{"title":"Default Title","offer_id":45990961479887,"sku":"HFTD_110100113","price":1709.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0649\/3896\/7247\/files\/110100113_21-HFTD.jpg?v=1788365803"}],"url":"https:\/\/latemodeltruck.com\/collections\/engine-cylinder-head.oembed","provider":"Late Model Truck","version":"1.0","type":"link"}