{"title":"Heads","description":null,"products":[{"product_id":"fleece-performance-01-04-gm-duramax-lb7-freedom-cylinder-head-w-cupless-injector-bore-driver-side","title":"Fleece Performance 01-04 GM Duramax LB7 Freedom Cylinder Head w\/Cupless Injector Bore (Driver Side)","description":"ALL NEW! Freedom Series cylinder heads for the LB7 6.6L Duramax now with a cupless injector bore - save time and money with no more injector cups to install, leak, or worry about. Each cylinder head is assembled from a new casting 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 valves, valve guides, springs, and valve seals. Perfect for the daily driver or towing application. Features Cupless injector bore - no injector cups to leak again ever! New aluminum casting New valves, valve guides, new springs, and new valve seals Pressure and leak tested Precision ground valves with a 45 degree angle CNC cut, multi-angle valve job Installation Notes We recommend using GM 12637788 head gasket (Grade C, Right) and GM 12637785 head gasket (Grade C, Left)","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":40683950473298,"sku":"FPEFPE-61-10001-D-CL","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/products\/042e04e9794569ef1efa141d6434e544.jpg?v=1705469123"},{"product_id":"fleece-performance-01-04-gm-duramax-lb7-freedom-cylinder-head-w-cupless-injector-bore-pssgr-side","title":"Fleece Performance 01-04 GM Duramax LB7 Freedom Cylinder Head w\/Cupless Injector Bore (Pssgr Side)","description":"ALL NEW! Freedom Series cylinder heads for the LB7 6.6L Duramax now with a cupless injector bore - save time and money with no more injector cups to install, leak, or worry about. Each cylinder head is assembled from a new casting 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 valves, valve guides, springs, and valve seals. Perfect for the daily driver or towing application. Features Cupless injector bore - no injector cups to leak again ever! New aluminum casting New valves, valve guides, new springs, and new valve seals Pressure and leak tested Precision ground valves with a 45 degree angle CNC cut, multi-angle valve job Installation Notes We recommend using GM 12637788 head gasket (Grade C, Right) and GM 12637785 head gasket (Grade C, Left)","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":40683951128658,"sku":"FPEFPE-61-10001-P-CL","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/products\/0cdca1fb6bb5ec5d5d9d90738f5a913b_8dabb4e8-8845-40c1-9aa0-80675c04e319.jpg?v=1705469128"},{"product_id":"fleece-performance-11-16-gm-duramax-2500-3500-lml-remanufactured-freedom-cylinder-head-driver","title":"Fleece Performance 11-16 GM Duramax 2500-3500 LML Remanufactured Freedom Cylinder Head (Driver)","description":"Introducing 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","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":40683951259730,"sku":"FPEFPE-61-10004-D","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/products\/2de73d433991051b1a50cdc8dede3d1c_cc2feb8e-3263-4e97-a967-531c33551fc6.jpg?v=1705469139"},{"product_id":"fleece-performance-11-16-gm-duramax-2500-3500-lml-remanufactured-freedom-cylinder-head-passenger","title":"Fleece Performance 11-16 GM Duramax 2500-3500 LML Remanufactured Freedom Cylinder Head (Passenger)","description":"Introducing 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","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":40683951292498,"sku":"FPEFPE-61-10004-P","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/products\/2de73d433991051b1a50cdc8dede3d1c_c3e3c7c5-0f72-4172-8a07-8e885224f8ec.jpg?v=1705469142"},{"product_id":"s-s-cycle-08-16-touring-super-stock-89cc-cylinder-head-kit-wrinkle-black","title":"S\u0026S Cycle 08-16 Touring Super Stock 89cc Cylinder Head Kit - Wrinkle Black","description":"These S\u0026amp;S® Super Stock® high performance cylinder heads are designed for 2006-'16 engines with stock crankcase. They work well with engines of stock displacement , but are ideal for somewhat larger stroker or big bore engines up to 110\". The 89cc combustion chamber provides a slightly higher than stock, but still manageable compression ratio in larger than stock engines.This makes them a good choice for touring bikes and other heavy vehicles. Machined for S\u0026amp;S® electric or manual compression releases. The large 2.000\" intake and 1.605\" exhaust valves maintain port velecity for good low and midrange response, but supply enough air for slightly larger engines to perform to their full potential. Intake ports flow 264 cfm compared to stock heads at 182cfm. S\u0026amp;S® High performance valve springs allow the installation of camshafts with up to .650\" lift. Compatible with stock rocker boxes, exhaust, and intake manifolds. Wrinkle black powder coat finish matches stock black engine components.","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":40688184426578,"sku":"SSC106-3240","price":1995.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/products\/23b9ccd42f4bcd93d5e2fd0c6d0abd13.png?v=1705732277"},{"product_id":"s-s-cycle-2017-m8-models-big-bore-top-end-guardian-kit","title":"S\u0026S Cycle 2017 M8 Models Big Bore Top End Guardian Kit","description":"Building your M8 for big power? S\u0026amp;S has the parts you need to bulletproof the top end of your valvetrain in one convenient kit! S\u0026amp;S performance parts are direct replacement for OEM pieces, but are stronger and more durable, giving your M8 the reliability it needs as you build big HP and Torque numbers. Rocker Arm shafts, Rocker Arm Stud Kit, Head Bolt Kit and Performance Roller Rocker Arms are included in this kit that is the perfect topper for your high performance M8 build.","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":40688195534930,"sku":"SSC900-1092","price":917.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/products\/6309f5657c4c337b6bf8d6220d6b2276.jpg?v=1705732677"},{"product_id":"fleece-performance-06-10-gm-duramax-2500-3500-lbz-lmm-remanufactured-freedom-cylinder-head-driver","title":"Fleece Performance 06-10 GM Duramax 2500-3500 LBZ\/LMM Remanufactured Freedom Cylinder Head (Driver)","description":"Introducing 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","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":41275127660626,"sku":"FPEFPE-61-10003-D","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/2de73d433991051b1a50cdc8dede3d1c.jpg?v=1731770689"},{"product_id":"fleece-performance-06-10-gm-duramax-2500-3500-lbz-lmm-remanufactured-freedom-cyl-head-passenger","title":"Fleece Performance 06-10 GM Duramax 2500-3500 LBZ\/LMM Remanufactured Freedom Cyl Head (Passenger)","description":"Introducing 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","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":41275127693394,"sku":"FPEFPE-61-10003-P","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/2de73d433991051b1a50cdc8dede3d1c_93efb0f5-7592-4f45-933f-4a93bec820d2.jpg?v=1731770693"},{"product_id":"fleece-performance-04-5-05-gm-duramax-2500-3500-lly-remanufactured-freedom-cylinder-head-driver","title":"Fleece Performance 04.5-05 GM Duramax 2500-3500 LLY Remanufactured Freedom Cylinder Head (Driver)","description":"Introducing 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","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":42121021882450,"sku":"FPEFPE-61-10002-D","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/2de73d433991051b1a50cdc8dede3d1c_37eb0a69-50ca-49ca-9693-736d764b318c.jpg?v=1755465641"},{"product_id":"fleece-performance-04-5-05-gm-duramax-2500-3500-lly-remanufactured-freedom-cylinder-head-passenger","title":"Fleece Performance 04.5-05 GM Duramax 2500-3500 LLY Remanufactured Freedom Cylinder Head (Passenger)","description":"Introducing 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","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":42121021915218,"sku":"FPEFPE-61-10002-P","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/2de73d433991051b1a50cdc8dede3d1c_97d3a81a-9631-4b95-a7c5-116a5342d5af.jpg?v=1755465642"},{"product_id":"fleece-performance-17-23-gm-2500-3500-freedom-series-cylinder-head-driver-side","title":"Fleece Performance 17-23 GM 2500\/3500 Freedom Series Cylinder Head (Driver Side)","description":"Introducing our Freedom Series cylinder heads for the 2017 - 2023 L5P 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 valves, valve guides, springs, and valve seals. Perfect for the daily driver or towing application. No core charge! Features Re-manufactured OE casting New valves, valve guides, springs, and valve seals Pressure and leak tested Multi-angle valve job Installation Notes: We recommend using GM head gasket (Grade C, 12727486)","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":42379873288274,"sku":"FPEFPE-61-10014-D","price":1199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/5ef515149e2d91ab90e8ef874f69449bL.png?v=1777226964"},{"product_id":"fleece-performance-17-23-gm-2500-3500-freedom-series-cylinder-head-passenger-side","title":"Fleece Performance 17-23 GM 2500\/3500 Freedom Series Cylinder Head (Passenger Side)","description":"Introducing our Freedom Series cylinder heads for the 2017 - 2023 L5P 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 valves, valve guides, springs, and valve seals. Perfect for the daily driver or towing application. No core charge! Features Re-manufactured OE casting New valves, valve guides, springs, and valve seals Pressure and leak tested Multi-angle valve job Installation Notes: We recommend using GM head gasket (Grade C, 12727486)","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":42379873321042,"sku":"FPEFPE-61-10014-P","price":1199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/771099f8ed4d556cd6c8195c966bdce4L.png?v=1777226965"},{"product_id":"fleece-performance-03-07-ford-super-duty-6-0l-powerstroke-20mm-dowel-freedom-series-hd-cylinder-head","title":"Fleece Performance 03-07 Ford Super Duty 6.0L Powerstroke 20mm Dowel Freedom Series HD Cylinder Head","description":"Improved casting. This isn’t your run of the mill, rinse and repeat OE casting.  Engineered from the ground up with years of testing and development - our higher tensile strength alloy castings incorporate increased wall thickness and additional material where it counts, providing for a more durable and longer lasting cylinder head.Extreme duty valve seats.  Race proven and stronger than OEM – our American made valve seats provide for longevity and stability in the cylinder head. Produced from a tungsten alloy for increased hardness, these seats deliver a substantially higher wear resistance vs. a stock replacement seat.Single piece O-ring. Our 6.0L cylinder head is the only cylinder head available with a single piece hoop style O-ring.  Our single piece O-ring ensures complete sealing of combustion vs. traditional stainless wire that has a seam.Application NotesAll 20mm dowel heads are configured for 2-bolt rocker box configurations.Fleece Performance recommends the use of 6.4L pushrods (Ford Part No. 8C3Z-6565-B) when installing these cylinder heads. 6.4L pushrods are 0.050” shorter in length vs. a 6.0L pushrod and will accommodate the tolerance stack ups that can be encountered with a replacement cylinder head. Head gasket not included. We recommend the use of Ford Part No.KZ3Z-6051-B.Cylinder Head Identification - Selecting the proper modelFollow the flow chart below to determine the appropriate cylinder head and components for your application (this information may also be found in our installation instructions). The engine serial number can be found on the rear, driver’s side of the engine block. An alternate location for the engine serial number can be found on the identification sticker located on top of the fuel injector control module (FICM). This only applies for vehicles with their original FICM. If you are unsure if the FICM is original to the vehicle, read the serial number on the back of the engine block.","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":42427305787474,"sku":"FPEFPE-61-10012-HD","price":1599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/8b6b1d9375d1d404b0b63699e200035bL.png?v=1779983985"}],"url":"https:\/\/www.vinniebuilt.net\/collections\/heads.oembed","provider":"VINNIEBUILT","version":"1.0","type":"link"}