Choate Engineering CEP66LMLLD 6.6L LML Long Block Daily Driver Crate Engine | 2011-2016 Silverado/Sierra 2500HD/3500HD 6.6L LML

Features:

• 500 HP rated
• Great for daily driving and light towing
• Comes with pickup tube O-ring
• Polished and inspected
• improves upon the OE 6.6L
• 5 Year / 100,000 Miles Warranty

Power your Adventures and Daily Commute

The Duramax lineup of engines is highly revered for its exceptional reliability and formidable power. The 6.6L Duramax LML Long Block Daily Driver was developed to enhance and extend upon these qualities. Recognized for its durable design, Choate's 6.6L Duramax LMM Long Block Daily Driver is a remarkably dependable engine built to endure thousands of miles. Perfect for occasional towing duties, it effortlessly handles daily commutes, ensuring a smooth journey.

Precisely Engineered for Durability

Crafted to surpass the performance of the OE 6.6L and embody the standard it should have set from the factory, Choate Engineering's Duramax 6.6L LML Long Block Daily Driver is a standout choice. Employing full CNC blueprint machining, this engine showcases precision engineering of the highest caliber. Choate meticulously aligns the crankshaft with the engine block through precise boring and line honing, guaranteeing seamless operation. They bore the block back to the crankshaft centerline and hone it to an RA13 finish, further minimizing friction. Surpassing factory specifications, the cylinder block is surfaced to a finish of RA30 or lower, ensuring superior flatness and smoothness for the block-to-head sealing surface. Additionally, Choate includes a comprehensive array of components, from a new rear main seal to upgraded pistons, OE lifters, lifter guides, OE Crank Flange bolts, and the latest 9.800 OE pushrods. The Crankshaft undergoes meticulous balancing and inspection for runout. With their Duramax 6.6L LML Long Block Daily Driver, Choate Engineering has truly gone the extra mile to guarantee its reliability and durability.

Fits: 2011-2016 6.6L Duramax LMM

Application Notes:

• Choate encourages the customers to fix the cooling issues and update the LLY with the larger later year model LBZ fan and radiator.
• Optional Parts are not installed. Optional parts are covered under the manufacturer’s warranty and not by Choate.

Build Features:

• Our Built-In-House Heads – Pressure Test Heads, Grind Valves, New Induction Hardened Seats, All New Valve Guides, Install New Valve Seals, Test Spring Tension, New Freeze Plugs, New Injector Cups.
• Head Studs included in our Daily Driver build, New Head Gaskets
• We bore the block back to the crankshaft center line and hone the block to RA13 finish.
• The piston diameter measured to the nearest .0001 inch matched to cylinder bores.
• The Cylinder block is surfaced to a finish of RA30 or lower, which meets the factory specification in both flatness and smoothness for the block to head sealing surface.
• Connecting Rods, New Damper and Flex plate for Automatic transmission.
• Check both wrist pin and crank pin to rod clearances
• New upgraded Pistons .10 – .30 inch over – New Pistons, Rings, Pin retainers weight matched prior to crank balancing
• New OE lifters, lifter guides, OE Crank Flange Bolts, updated 9.800 OE Pushrods
• Crankshaft – Balanced with the Rotational assembly checked for run-out inspected for fatigue.
• Crankshaft is Polished and ground to .0005 concentricity or less
• Camshaft – Polished and Inspected
• New Rod, Main and Cam Bearings
• Install Rear Main Seal
• Install New Bed Seals
• Install New Rear Cover Gasket
• Install Upper and Lower Oil Pan Gaskets
• Install Pickup Tube O-ring
• Rear Cover Installed

Warning: This product can expose you to chemicals that are known to the State of California to cause cancer. For more information, visit www.P65warnings.ca.govNote: $500 Shipping surcharge will be added at checkout

Year Ranges	Make	Model	Series	Engine
2011-2016	GM	Silverado/Sierra	2500HD/3500HD	6.6L

Property	Values
Year Ranges	2011-2016
Make	GM
Model	Silverado/Sierra
Series	2500HD/3500HD
Engine	6.6L