Choate Reman 6.6 LLY Long Block Crate Engine - Model C

The Choate Reman 6.6 LLY Long Block Crate Engine - Model C is the ideal replacement for the worn, high-mileage LLY Duramax in your Chevy Silverado/GMC Sierra 2500HD/3500HD. All Choate engines begin with a full CNC blueprint machining process includes precision boring, decking, honing, and line honing to meet exact specifications. The cylinder bores are bored to a true 90 degrees from the crankshaft centerline and diamond honed to within .0002 inches for precise piston-to-cylinder bore clearances. The main housing is also honed to ensure perfect alignment of the crankshaft within the engine block. Each piston diameter is measured to the nearest .0001 inches to match the cylinder bores precisely.

The Model C is equipped with new pistons, piston rings, pin retainers. The crankshaft is polished and ground to a concentricity of .0005 inches or less, ensuring smooth operation. In addition, the engine features, new rod bearings, main bearings, and cam bearings along with new freeze plugs and a keyed crankshaft. The long block adds remanufactured cylinder heads with new valve guides and valve seals, saving you valuable time when you go to install it in your truck.

Features:

• Polished Crankshaft And Camshaft
• Main Bore Honed For Perfect Alignment Of The Crankshaft In The Engine Block
• Cylinders Bored At A 90-Degree Angle Over Crankshaft Centerline For Accuracy
• Square Deck Block Design For Consistent Compression Ratios Across Cylinders
• Full CNC Blueprint Machining For Bore, Deck, Hone, And Line Honing Processes
• Pistons Measured To The Nearest .0001 Inch For An Exact Fit And Optimized Performance
• Precision Honing To .0002 Inch Accuracy With Surface Finish Checked Using A Profilometer
• Diamond Honed Cylinder Bores To Within .0002 Inch For Precise Piston-To-Cylinder Bore Clearances
• Block Surface Finished To 30 Ra Or Lower For Proper Sealing With Multi-Layer Steel (MLS) Head Gasket

Model C Long Block Includes:

• New Pistons, Piston Rings, & Pin Retainers
• New Rod, Main, & Cam Bearings
• Polished Crankshaft & Camshaft
• New OE Lifters & Lifter Guides
• New Oil Pressure Regulator
• New Freeze Plugs
• Keyed Crankshaft
• Cylinder Heads
• New Head Bolts
• New Head Gaskets
• New Valve Guides & Seals

New Engine Checklist (Replacement Items Required For Engine Warranty - Sold Separately):
Oil Pump
Oil Cooler
Water Pump
Filters (Oil, Air, Fuel)

Choate Long Block Note:
Long Block engines typically consist of a short block with cylinder heads and are ready for the final buildup. This long block does not include bolt-on components such as the oil pans, front & rear covers, valve covers, intake, exhaust, fuel system, or turbo components. These items will need to be changed over from your existing engine or purchased new and installed onto your new Choate Long Block before installation into your truck.

Manufacturer Warranty*:
1 Year / 12,000 Mile
View Warranty Form

Note:
Engine pictures are for display and reference purposes only.
Please check the product description for information on what components are included with this engine.