{"product_id":"choate-performance-cep66llyldk","title":"Choate Performance CEP66LLYLDK - 6.6L 04.5-06 Duramax LLY Kodiak Long Block Daily Driver Diesel Crate Engine","description":"\u003cp\u003eChoate Performance CEP66LLYLDK - 6.6L 04.5-06 Duramax LLY Kodiak Long Block Daily Driver Diesel Crate Engine\u003c\/p\u003e\u003cp\u003eThe Model C is a budget-friendly build designed for those looking for an engine close to stock in power but with the common issues fixed.\u003cbr\u003e\u003cstrong\u003eKey Features and Fixes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCore Performance and Power\u003c\/li\u003e\n\u003cli\u003eFully Balanced Rotating Assembly: Precision-balanced components ensure smooth, vibration-free operation and extended bearing life at high RPMs.\u003c\/li\u003e\n\u003cli\u003eReliability and Durability Upgrades\u003c\/li\u003e\n\u003cli\u003eMaxxforce Style Pistons: Upgraded pistons that are inherently stronger and designed for more robust commercial applications. This solves the OEM issue of weak pistons that are prone to cracking under heat and boost.\u003c\/li\u003e\n\u003cli\u003eEnhanced Valve Integrity: Features all-new, upgraded material valves that eliminate the high-heat separation common in OEM exhaust valves, preventing compression loss and piston-to-valve contact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMachining Process:\u003c\/strong\u003e\u003cbr\u003eChoate Engineering Performance doesnt just rebuild engines - we remanufacture them. Each of our engines undergoes extensive, precision machine work to correct OEM flaws and ensure durability and reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngine Block Machining:\u003c\/strong\u003e\u003cbr\u003eEach of our engine blocks are CNC blueprint machined using state-of-the-art CNC machines. This process ensures perfect dimensions, precise tolerances, and optimal alignment. This starts with decking the surface of the block to achieve the necessary flatness and smoothness (Ra 30 or better) required for flawless sealing with MLS head gaskets.\u003c\/p\u003e\n\u003cp\u003eThe cylinders are then diamond honed to an extremely tight tolerance to match the piston diameter (within the nearest 0.0001 inch). Following honing, the main bearing bores are line honed to establish a true, straight centerline for the crankshaft. Finally, the cylinder bores are bored to a true 90 degree angle from the crankshaft centerline.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCylinder Head Machining:\u003c\/strong\u003e\u003cbr\u003eOur cylinder heads are fully machined and enhanced in-house to improve airflow and reliability. Each head is first magnafluxed and pressure tested to ensure they are free of any cracks or leaks. The surface is then precision decked to an extremely smooth finish, guaranteeing the necessary flatness for a perfect seal with MLS head gaskets.\u003c\/p\u003e\n\u003cp\u003eInternally, the valve seats are machined to optimize airflow and prevent common failures, and the entire valve train geometry is blueprinted to specific tolerances to reduce lifter preload and prolong component life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRotational Assembly Balancing:\u003c\/strong\u003e\u003cbr\u003eThe balancing of the rotational assembly is crucial for eliminating vibration and maximizing engine longevity. This precision work involves checking and correcting the balance of the crankshaft, connecting rods, and pistons. The crankshaft is thoroughly checked for run-out and inspected for fatigue before being polished and ground to strict concentricity tolerances (0.0005 or less) to ensure the new bearings receive the best possible surface.\u003c\/p\u003e\n\u003cp\u003eRods are inspected and conditioned, and all bearing clearances checked to ensure proper fitment with the new bearings. Each of the pistons, rings, and pin retainers are meticulously weight matched (to a tolerance of 2 grams or less) prior to crank balancing. Then the entire assembly is dynamically balanced on specialized equipment. This ensures that the engine runs smoothly, minimizing stress on the bearings, and extends the overall life of the components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComponents and Parts:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngine Core Components\u003c\/li\u003e\n\u003cli\u003eCylinder Block\u003c\/li\u003e\n\u003cli\u003eKeyed Crankshaft\u003c\/li\u003e\n\u003cli\u003eSteel Connecting Rods\u003c\/li\u003e\n\u003cli\u003eCamshaft\u003c\/li\u003e\n\u003cli\u003eNew Pistons\u003c\/li\u003e\n\u003cli\u003eReman Cylinder Heads\u003c\/li\u003e\n\u003cli\u003eNew Main Bearings\u003c\/li\u003e\n\u003cli\u003eNew Rod Bearings\u003c\/li\u003e\n\u003cli\u003eNew Cam Bearings\u003c\/li\u003e\n\u003cli\u003eMain Bolts\u003c\/li\u003e\n\u003cli\u003eHead Bolts\u003c\/li\u003e\n\u003cli\u003eLifters\u003c\/li\u003e\n\u003cli\u003eNew Freeze Plugs\u003c\/li\u003e\n\u003cli\u003eGaskets and Seals\u003c\/li\u003e\n\u003cli\u003eNew Head Gaskets\u003c\/li\u003e\n\u003cli\u003eCylinder Head Components\u003c\/li\u003e\n\u003cli\u003eNew Valve Guides\u003c\/li\u003e\n\u003cli\u003eNew Injector Cups\u003c\/li\u003e\n\u003cli\u003eNew Valve Stem Seals\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Choate Performance","offers":[{"title":"Default Title","offer_id":51213560447254,"sku":"KLZM-CEP66LLYLDK","price":14722.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_cep66llyldk-klzm_normalized.jpg?v=1777123027","url":"https:\/\/www.cspracing.com\/products\/choate-performance-cep66llyldk","provider":"Complete Street Performance","version":"1.0","type":"link"}