KORE661116LMLLBCC Kore Series Callies Crankshaft Long Block (STD/Auto)

Features:

• Upgraded Callies Compstar-Durastar crankshaft included
• Hardened 4340 steel crankshaft
• Deep DuraCase nitride treatment for durability
• Drilled rod journals for reduced inertia
• True Form fillet radii on all journals
• Keyed timing gear resists shearing
• Accepts OEM flywheels and flexplates
• Total Seal gapless piston rings included
• Machined with Rottler equipment, tighter than OEM
• Built in ISO 9001:2015 certified facility
• 1 year unlimited mileage warranty

A Stronger Bottom End For An LML That Has Work To Do

When an LML Duramax fails, the crankshaft is one of the parts owners worry about most, because a broken crank turns a rebuild into a much bigger problem. This DFC Diesel KORE Series long block answers that worry by building the engine around an upgraded Callies Compstar-Durastar crankshaft instead of a stock one. The crank is made from hardened 4340 steel with a deep DuraCase nitride treatment, and that treatment is there to improve durability and wear over the long haul. Every journal has True Form fillet radii, the timing gear is keyed so it resists shearing, and the rod journals are drilled to cut down on inertia and make balancing easier. Because it keeps the OEM stroke, journal diameters, and flywheel fit, it goes in without a pile of specialty parts. Around that crank you still get everything the KORE Series is known for, including Rottler machined tolerances better than OEM, all new pistons, rings, bearings, and valves, and Total Seal gapless rings as standard. DFC keeps the price in check by leaving out parts you can reuse, so you get a stronger bottom end without paying for a full premium build. For a 2011-2016 Silverado or Sierra HD that you plan to work hard, this is a smart place to put your money.

Hardened 4340 Steel Crank Inside A Rottler Machined Long Block

The DFC Diesel KORE661116LMLLBCC is a remanufactured long block built for 2011-2016 GM Silverado and Sierra 2500HD and 3500HD trucks with the 6.6L Duramax LML, listed for standard and automatic transmission applications. It uses an upgraded Callies Compstar-Durastar crankshaft in place of the factory unit. The crank is made from hardened 4340 steel with a deep DuraCase nitride treatment, drilled rod journals, and True Form fillet radii on every journal, polished to a 6Ra or finer finish. It keeps the OEM stroke of 3.898 inches along with OEM journal diameters and width, uses a dual keyed damper fit, and has a keyed timing gear to prevent shearing. It accepts OEM post and flange bolts as well as OEM flywheels and flexplates, and the main bearing oil holes have lead-ins to improve cold start oil flow to the rod journals. The rest of the engine follows DFC's KORE Series process, machined on Rottler equipment to tolerances better than OEM, with all new pistons, rings, bearings, gaskets, seals, valves, springs, hardened seats, stem seals, and cast guides. It also includes Total Seal gapless piston rings and improved gasket sealing in common leak areas. The engine ships as a short block with the cylinder heads installed and a complete top end gasket kit, and it is built in an ISO 9001:2015 certified facility with a 1 year, unlimited mileage manufacturer warranty.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Built with an upgraded Callies Compstar-Durastar crankshaft, not the factory unit
• Crankshaft keeps the OEM stroke and journal diameters and accepts OEM flywheels and flexplates
• New oil cooler required for warranty coverage, sold separately
• New air, oil, and fuel filters required for warranty coverage, sold separately
• New water pump required for warranty coverage, sold separately
• New lubricating oil required for warranty coverage, sold separately
• Warranty is void if not installed with the fluids specified by the manufacturer
• Does not include bolt on components such as valve covers, intake, exhaust, fuel system, or turbo, swap these over from your existing engine
• Does not include front cover, rear cover, oil pump, upper or lower oil pan, oil pickup tube, rocker arms, pushrods, or valve bridges
• Customer is responsible for professionally testing, cleaning, and replacing injectors, injection pumps, and fuel system as needed
• Component brands may vary by build based on parts availability, cannot be specially requested
• $500 shipping charge/$2,800 core charge 
• Engine shipping crate must be returned with core engine for full core credit
• Manufacturer warranty: 1 year, unlimited mileage
• Turbocharger replacement recommended over 125K miles, mandatory if shaft play present or engine was dusted
• Injector replacement highly recommended on higher mileage or contaminated fuel engines
• Evans Waterless Coolant recommended upgrade for corrosion and boilover prevention
• This product cannot be shipped to California

Install Instructions