6.6L Short Block Workhorse LLY Engine 2004.5-2006 Duramax Diesel Engine.

Choate Engineering Performance Part# SKU:CEP66LLYSW

This build Includes:

• Stage 2 Camshaft (See Video)
• Installed Rear Cover
• Installed Upper Oil Pan
• Installed Lower Oil Pan
• Oil Level Sensor
• Flexplate
• New Harmonic Damper
• Flycut, Coated, and Delipped Pistons  (See Video)
• New Freeze Plugs
• 5 Year/100k Warranty
• New OE Lifters
• Lifter Guides
• OE Crank Flange Bolts
• New Rod, Main and Cam Bearings
• Install Rear Main Seal
• Install New Rear Cover Gasket
• Install Upper and Lower Oil Pan Gaskets
• Install Pickup Tube O-ring
• Rear Cover Installed
• Connecting Rods

Machining Processes

• Full CNC blue print machining, (bore, deck, hone and line honed)  (See Video)
• The Cylinder bores are blue print bored to a true 90 degrees over the crankshaft center line
• Diamond honed to within .0002 inch for precise piston to cylinder bore clearance. (See Video)
• Bored and line hone the crank bore housing to precisely align the crankshaft in the engine block.
• Torque Plate Honed (See Video)
• 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.
• This is mandatory for proper sealing of a MLS Gasket.
• Keyed Crankshaft  (See Video)
• Balanced and Weight Matched Rotational Assembly  (See Video)

Flexplate for Automatic transmission. (If you are using this for a manual transmission we highly suggest sending in your flywheel and pressure plate so we can achieve the best balancing job possible for your engine. Also, now is a great time to upgrade your clutch. Get with our team to talk about the options we have available for you!)

  What you need to know about Choate Vs. the Competition. We have put together a list of videos for all processes we do to this engine. It is your responsibility to educate yourself about the differences. To do so we made that easier with this compilation of videos!

This is why we machine the crankshaft for an upgraded keyway!

What is Blueprint Boring?

This is why we square deck the block!

Why the WorkHorse Engine Comes with O-Ringed Heads

What’s the big deal about Choate Camshafts?

This is why we balance the rotational assembly!

This is why we torque plate hone!

Why we only use the Rottler hone for YOUR engine!

Why do we encourage you to buy a long block instead of a short block?

On the fence on which engine you should buy? Daily Driver VS WorkHorse Engine.

Assembled by Our Professional Team in house.

6.6L Duramax LLY Long Block Workhorse series engines: 600 HP rated. Designed with the working man in mind. The perfect platform for those who do heavy hauling regularly. Fully balanced and blueprinted.

• 6.6L 2004.5-2006 Duramax LLY
• Short Block
• Workhorse Diesel

Upgrades From Daily Driver include but are not limited to:

• Chromoly Pushrods
• Stage 2 Cam Shaft
• O-Ringed Heads
• Coated, Flycut and Deliped Pistons, Torque Plate Honing

***Warning!***

The Workhorse Platform is built for the working man. Made to haul heavy. This is a man’s engine. Made to tow big stuff. If you don’t have callouses on your hands, or have a man bun, do not buy this engine. The exhaust this engine generates will blow the skirt right off your effiminate body. If you are a lumber jack, or need something to haul your traveling act for grizzly bear wrestling, this engine is for you. Built by Men, Made for Chuck Norris.