{"title":"6.6L LML Duramax Cylinder Heads","description":null,"products":[{"product_id":"gm-remanufactured-stock-heads-for-11-16-lml-6-0l-duramax-industrial-injection","title":"Industrial Injection GM Remanufactured Stock Heads For 11-16 LML 6.0L Duramax","description":"\u003cp\u003eThe Industrial Injection LML Duramax Stock Remanufactured Heads are designed to be a factory replacement. Complete ready to bolt on.Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon.\u003c\/p\u003e\n\u003cp\u003eNext they are checked by magnafluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable. New High Strength Alloy, Heat Treated iron based valve guides are installed.\u003c\/p\u003e\n\u003cp\u003eThese guides are heat treated to Rockwell 22 Scale, which produces the ultimate in wear resistance. This is far superior to original guide material, including Bronze. The guide incorporates a spiral grove inside the guide to hold oil and aid the lubrication of the valve during engine operation.\u003c\/p\u003e\n\u003cp\u003eGuides are then honed (not reamed) to exact size using a diamond honing mandrel. Diamond abrasives allow for consistency of size, surface finish, and bore geometry with no variation from guide to guide.\u003c\/p\u003e\n\u003cp\u003eThe guide size is then verified using a valve guide bore gauge. As needed the head receives new Premium valve seat inserts made from a true Nickel Based Non-Magnetic material that was developed for extreme operating conditions.\u003c\/p\u003e\n\u003cp\u003eNext the head is treated to a multi angle valve job to help maximize the flow of air in and out of the head. This is accomplished using a Serdi 100 guide and seat machine. Serdi uses a solid carbide straight shank pilot.\u003c\/p\u003e\n\u003cp\u003eWhen inserted into the valve guide, it simulates the real valve stem during the centering process. This guarantees the valve seat is finished for a perfect valve to seat match. Using CBN or Diamond tooling the head is given a new surface.\u003c\/p\u003e\n\u003cp\u003eWith our berco milling machine we can control the surface finish to accommodate different head gasket types. For example MLS head gaskets require a very smooth surface finish.Finally the head is jet washed dried and assembled with new valve seals and new valve springs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect Replacement\u003c\/li\u003e\n\u003cli\u003eDiamond Honed Guides\u003c\/li\u003e\n\u003cli\u003eUnshrouded Valves\u003c\/li\u003e\n\u003cli\u003eHigh Strength Alloy, Heat Treated iron based valve guides\u003c\/li\u003e\n\u003cli\u003ePremium valve seat inserts made from a true Nickel Based Non-Magnetic material\u003c\/li\u003e\n\u003cli\u003eMulti angle valve job\u003c\/li\u003e\n\u003cli\u003eNew valve springs\u003c\/li\u003e\n\u003cli\u003eSold in a pair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e To receive full core credit we need a good, re-useable pair of cylinder heads. No cracks, warping, or excessive wear.\u003c\/p\u003e","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":47737640583317,"sku":"PDM-LMLSH-GHJV","price":1648.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/PDM-LMLSH-GHJV.jpg?v=1787003411"},{"product_id":"gm-race-heads-for-11-16-lml-6-0l-duramax-industrial-injection","title":"Industrial Injection GM Race Heads For 11-16 LML 6.0L Duramax","description":"\u003cp\u003eThe Industrial Injection LML Duramax Race Heads are designed for the racer \/ sled puller in mind. Fully CNC ported heads complete ready to bolt on.\u003c\/p\u003e\n\u003cp\u003eHeads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon. Next they are checked by magnafluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable. Valve guides and seats are removed as needed for porting.\u003c\/p\u003e\n\u003cp\u003ePort development is accomplished using a superflow 600 flow bench with a computer recording all flow measurements.\u003c\/p\u003e\n\u003cp\u003eMany things are considered when designing a cylinder head Port; air flow is only one of the things to think about. Another major concern is port wall thickness.\u003c\/p\u003e\n\u003cp\u003eAnyone can get a head to produce high flow numbers, but if doing so leaves the port wall to thin the casting will crack. High performance Diesel heads are more prone to crack because of the thermal shock experienced by excessive intermittent or long term exhaust temperatures.\u003c\/p\u003e\n\u003cp\u003eThe porting is then preformed using a new 5 Axis CNC Cylinder Head Porting Machine with CAD\/CAM software specifically designed for cylinder head porting. CNC porting brings unparalleled accuracy to head porting with each port flowing the same. This helps balance the power that each cylinder produces, making tuning easier.\u003c\/p\u003e\n\u003cp\u003eNew High Strength Alloy, Heat Treated iron based valve guides are installed. These guides are heat treated to Rockwell 22 Scale, which produces the ultimate in wear resistance. This is far superior to original guide material, including Bronze. The guide incorporates a spiral grove inside the guide to hold oil and aid the lubrication of the valve during engine operation.\u003c\/p\u003e\n\u003cp\u003eGuides are then honed (not reamed) to exact size using a diamond honing mandrel. Diamond abrasives allow for consistency of size, surface finish, and bore geometry with no variation from guide to guide. The guide size is then verified using a valve guide bore gauge.\u003c\/p\u003e\n\u003cp\u003eAs needed the head receives new Premium valve seat inserts made from a true Nickel Based Non-Magnetic material that was developed for extreme operating conditions.\u003c\/p\u003e\n\u003cp\u003eNext the head is treated to a multi angle valve job to help maximize the flow of air in and out of the head. This is accomplished using a Serdi 100 guide and seat machine.\u003c\/p\u003e\n\u003cp\u003eSerdi uses a solid carbide straight shank pilot. When inserted into the valve guide, it simulates the real valve stem during the centering process. This guarantees the valve seat is finished for a perfect valve to seat match.\u003c\/p\u003e\n\u003cp\u003eUsing CBN or Diamond tooling the head is given a new surface. With our berco milling machine we can control the surface finish to accommodate different head gasket types. For example MLS head gaskets require a very smooth surface finish.\u003c\/p\u003e\n\u003cp\u003eFinally the head is jet washed dried and assembled with new valve seals and new performance valve springs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5 Axis CNC Cylinder Head Porting Machine with CAD\/CAM software specifically designed for cylinder head porting\u003c\/li\u003e\n\u003cli\u003eDiamond Honed Guides\u003c\/li\u003e\n\u003cli\u003eUnshrouded Valves\u003c\/li\u003e\n\u003cli\u003eHigh Strength Alloy, Heat Treated iron based valve guides\u003c\/li\u003e\n\u003cli\u003ePremium valve seat inserts made from a true Nickel Based Non-Magnetic material\u003c\/li\u003e\n\u003cli\u003eMulti angle valve job\u003c\/li\u003e\n\u003cli\u003ePerformance 130LB valve springs\u003c\/li\u003e\n\u003cli\u003eSold in a pair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e To receive full core credit we need a good, re-useable pair of cylinder heads. No cracks, warping, or excessive wear.\u003c\/p\u003e","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":47737676988565,"sku":"PDM-LMLRH-GHJV","price":4025.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/PDM-LMLRH-GHJV.jpg?v=1787005456"},{"product_id":"fleece-freedom-series-duramax-cylinder-head-for-2011-2016-lml-driver-side","title":"Fleece Freedom Series Duramax Cylinder Head for 2011-2016 LML (Driver Side)","description":"\u003cp\u003eIntroducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valve guides, springs, and valve seals. Perfect for the daily driver or towing application, these heads utilize stock valves with a 45 degree angle on the intake and exhaust ports. Now available with no core charge! Features: New valve guides, new springs, and new valve seals Pressure and leak tested Precision ground stock valves with a 45 degree angle Multi-angle valve job Warranty: 1 Year Limited Parts Warranty\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNew valve guides, new springs, and new valve seals\u003c\/li\u003e\n\u003cli\u003ePressure and leak tested\u003c\/li\u003e\n\u003cli\u003ePrecision ground stock valves with a 45 degree angle\u003c\/li\u003e\n\u003cli\u003eMulti-angle valve job\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2011-2016 GM 2500-3500 Duramax 6.6L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-BRAB-D1\/FPE-DUR-S2-PROD\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849014657173,"sku":"FQWW-FPE-61-10004-D","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-61-10004-D-F1.png?v=1787870163"},{"product_id":"fleece-freedom-series-duramax-cylinder-head-for-2011-2016-lml-passenger-side","title":"Fleece Freedom Series Duramax Cylinder Head for 2011-2016 LML (Passenger Side)","description":"\u003cp\u003eIntroducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valve guides, springs, and valve seals. Perfect for the daily driver or towing application, these heads utilize stock valves with a 45 degree angle on the intake and exhaust ports. Now available with no core charge! Features: New valve guides, new springs, and new valve seals Pressure and leak tested Precision ground stock valves with a 45 degree angle Multi-angle valve job Warranty: 1 Year Limited Parts Warranty\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNew valve guides, new springs, and new valve seals\u003c\/li\u003e\n\u003cli\u003ePressure and leak tested\u003c\/li\u003e\n\u003cli\u003ePrecision ground stock valves with a 45 degree angle\u003c\/li\u003e\n\u003cli\u003eMulti-angle valve job\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2011-2016 GM 2500-3500 Duramax 6.6L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-BRAB-D1\/FPE-DUR-S2-PROD\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849557885077,"sku":"FQWW-FPE-61-10004-P","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-61-10004-P-F1.png?v=1787871280"},{"product_id":"ppe-2011-2016-gm-6-6l-duramax-cast-iron-cylinder-head-one-lml","title":"PPE 2011-2016 GM 6.6L Duramax Cast Iron Cylinder Head One LML","description":"\u003cp\u003e50 States Emissions Legal (E.O. D-701-PENDING)\u003c\/p\u003e \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 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.\u003c\/p\u003e \u003cp\u003ePPE 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.\u003c\/p\u003e \u003cp\u003ePowder 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\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.\u003c\/p\u003e \u003cp\u003eFor 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","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":47849708978325,"sku":"110100105-HFTD","price":1349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/110100105-HFTD.jpg?v=1787873381"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/collections\/PDM-LMLRH-GHJV.jpg?v=1789776049","url":"https:\/\/dieselproof.com\/collections\/6-6l-lml-duramax-cylinder-heads.oembed","provider":"Diesel Proof","version":"1.0","type":"link"}