{"product_id":"precision-plus-reman-long-block-6-6l-lml-duramax-2011-2016-chevrolet-gmc-hd","title":"Precision Plus Reman Long Block | 2011-2016 Chevrolet 6.6 Duramax LML","description":"\u003cp\u003e\u003cspan\u003eThe D\u0026amp;J Precision Machine Precision Plus Long Block is a complete replacement engine solution for 2011-2016 GM 6.6L LML Duramax applications. Each engine is completely disassembled, cleaned, inspected, precision machined, and rebuilt to D\u0026amp;J Precision Machine specifications.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe block is precision machined and matched with OEM-spec Tier 1 pistons and rings as required for proper fit and performance. Cylinder heads are inspected and resurfaced with recut valve seats and new Fvalves. The upgraded L5P top-hat valve stem seal design helps prevent valve seal failure and improve long-term durability.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe engine is assembled with Tier 1 MLS head gaskets and upgraded ARP head studs for improved sealing and clamping strength. An upgraded L5P oil cooler helps maintain lower engine oil temperatures and reduce the risk of piston cracking and related engine failure.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe oil pump is pinned to help prevent oil pump rotation and loss of oil pressure. The crankshaft and camshaft are keyed to provide positive timing and component retention.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eNew bearings, thrust washers, lifters, valve springs, and freeze plugs are installed as part of the remanufacturing process.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eEach engine is measured and tested in-house using D\u0026amp;J Precision Machine’s RMC ETS test equipment before shipment. The engine undergoes a controlled test sequence to verify key operating conditions, including oil pump pressure and volume, cylinder compression, and cooling system integrity. This in-house testing allows D\u0026amp;J to identify potential issues before the engine leaves the facility, providing an additional level of quality control and helping ensure the completed long block is ready for installation and service.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe result is a professionally remanufactured LML Duramax long block designed to provide dependable performance for everyday driving, towing applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete Remanufactured Long Block: Fully rebuilt to D\u0026amp;J Precision Machine specifications for a reliable replacement engine.\u003c\/li\u003e\n\u003cli\u003ePrecision Machined: CNC blueprinted, bored, honed, and deck surfaced for precise cylinder geometry and proper piston fit. Each crankshaft is checked for straightness and size and repaired as needed.\u003c\/li\u003e\n\u003cli\u003eNew OEM-Spec Tier 1 Pistons and Rings: Provides a high-quality piston and ring package for proper fit, sealing, and consistent engine performance.\u003c\/li\u003e\n\u003cli\u003eUpgraded L5P Oil Cooler: Improves engine oil cooling to help maintain lower oil temperatures and reduce the risk of piston cracking and related engine failure.\u003c\/li\u003e\n\u003cli\u003eRemanufactured Cylinder Heads: Resurfaced and fitted with recut valve seats and new valves for proper sealing and reliable valve operation. The upgraded L5P top-hat valve stem seal design helps prevent valve seal failure and improve long-term durability.\u003c\/li\u003e\n\u003cli\u003eUpgraded ARP Head Studs and MLS Head Gaskets: Provides increased clamping strength and reliable cylinder sealing to help address common LML head gasket failure.\u003c\/li\u003e\n\u003cli\u003ePinned Oil Pump: Secures the oil pump to help prevent pump rotation and maintain consistent oil pressure.\u003c\/li\u003e\n\u003cli\u003eKeyed Crankshaft and Camshaft: Addresses a known failure point by providing positive mechanical retention between the shaft and gear, helping prevent unwanted movement and related component failure.\u003c\/li\u003e\n\u003cli\u003eNew Bearings and Thrust Washers: Restores proper internal clearances and supports reliable engine operation.\u003c\/li\u003e\n\u003cli\u003eNew Valves: New high-quality valves provide reliable sealing and consistent valve operation for improved long-term durability and performance.\u003c\/li\u003e\n\u003cli\u003eNew Valve Springs: Restores proper valvetrain operation and performance.\u003c\/li\u003e\n\u003cli\u003eRocker Boxes and Valve Covers Included: Reduces component transfer and installation time for a more complete replacement package.\u003c\/li\u003e\n\u003cli\u003ePrecision Assembly: Critical engine dimensions and clearances are verified throughout the build for consistent quality.\u003c\/li\u003e\n\u003cli\u003eIn-House RMC Engine Testing: Each engine is tested using D\u0026amp;J Precision Machine’s RMC ETS-100 equipment to verify oil pump pressure and volume, cylinder compression, and cooling system integrity before shipment.\u003c\/li\u003e\n\u003cli\u003eBuilt for Everyday Use: Designed to provide reliable performance for everyday driving, and towing applications.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DJ Precision Machine","offers":[{"title":"Default Title","offer_id":44104259797110,"sku":"DJPLB100111","price":13499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/0042\/8662\/files\/djplb100111_01.png?v=1790794207","url":"https:\/\/djprecisionmachine.com\/products\/precision-plus-reman-long-block-6-6l-lml-duramax-2011-2016-chevrolet-gmc-hd","provider":"djprecisionmachine.com","version":"1.0","type":"link"}