KORE661116LMLSOALBCC Kore Series Speed of Air Callies Crankshaft Long Block (STD/Auto)

Features:

• Speed of Air Hyperformance pistons included
• Upgraded Callies Compstar-Durastar crankshaft
• Hardened 4340 steel crankshaft
• Deep DuraCase nitride treatment for durability
• Thermal barrier and anti-friction piston coatings
• CNC-machined turbulator dimples on piston tops
• Accepts OEM flywheels and flexplates
• Total Seal gapless piston rings included
• Machined with Rottler equipment, better than OEM tolerances
• Built in ISO 9001:2015 certified facility
• 1 year unlimited mileage warranty

Smarter Pistons On Top And A Stronger Crank Down Below

Most long blocks make you pick a lane, either a smarter piston or a stronger crank, but this DFC Diesel KORE Series build gives an LML owner both. Up top, it uses Speed of Air Hyperformance pistons, which have CNC machined turbulator dimples on the piston tops designed to help the flame front burn closer to the cool chamber walls. DFC and Speed of Air say that improves combustion efficiency, with benefits that include better fuel mileage, more torque and horsepower, and improved drivability and pulling power, though results will vary by truck and how it is driven. Down below, the engine is built around an upgraded Callies Compstar-Durastar crankshaft made from hardened 4340 steel with a deep DuraCase nitride treatment, which is there to improve durability and wear. That matters because a broken crank is one of the failures Duramax owners worry about most. The crank keeps OEM journal diameters and accepts OEM flywheels and flexplates, so it goes in without a pile of specialty parts. Everything else is standard KORE Series quality, with Rottler machined tolerances better than OEM, all new bearings and valves, and Total Seal gapless rings. For a 2011-2016 Silverado or Sierra HD that has to work hard and last, this is the most complete way to rebuild an LML on a KORE Series budget.

Patented Piston Turbulators Paired With A Nitrided 4340 Crankshaft

The DFC Diesel KORE661116LMLSOALBCC 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 Speed of Air Hyperformance pistons, which have patented turbulator indentations CNC machined into the piston top to exacting tolerances under ISO 9001 quality standards. The pistons also carry an aerospace proven thermal barrier coating on the crowns and an anti friction coating on the skirts. 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 rings, bearings, gaskets, seals, valves, springs, hardened seats, and cast guides, plus Total Seal gapless piston rings and improved gasket sealing in common leak areas. It ships as a short block with the cylinder heads installed and a complete top end gasket kit, 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 Speed of Air Hyperformance pistons and an upgraded Callies Compstar-Durastar crankshaft, not the factory crank
• Fuel mileage, power, and torque gains are manufacturer claims, results will vary
• Crankshaft keeps the OEM stroke and journal diameters and accepts OEM flywheels and flexplates
• Long block with cylinder heads installed and a complete top end gasket kit included
• 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 
• 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