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Thoroughbred Sku #: CEP66LLYLD-CRE
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$12,500.00
Terms & Conditions for Cores
Many stock replacement parts such as turbos, injectors, injection pumps, and high pressure oil pumps have a core charge that is associated with the new replacement part. You must return the old part to receive a refund on the core charge.
If you plan on returning your core you have two options.
Thoroughbred Diesel offers defer the upfront core charge when purchasing via credit card payment.
OPTION 1: You can accept the core charge, which means you will be charged for the part AND the core at time of purchase. You still have the option to send it back, and if you do, the core will be refunded back on the card used, presuming the core meets core criteria and the core is returned within 30 days from the time your order is received. If you return your core after 30 days you may refer to the Core Charge Timeline below as to how you will be refunded.
Core Charge Timeline
OPTION 2: You can defer the core charge. If you defer, you will not be charged for the core at the time of purchase. You will have 21 days from the time your order is received to send the core back. If the core is not received within the 21 days, your credit card will be charged for the core amount on your order. If you return your core after 21 days, you may refer to the Core Charge Timeline below as to how you will be refunded. When Core deferral (Pay Core Charge Later) is limited to payment by credit card only. ***When using PayPal or Affirm as your method of payment “Core Deferral (Pay Core Charge Later)” is not available. The core must be paid at time of purchase. ***
Core Return Procedure
2004 - 2005 Chevy Silverado 2500
2004 - 2005 Chevy Silverado 3500
2004 - 2005 GMC Sierra 2500
2004 - 2005 GMC Sierra 3500
Product Name: Choate 6.6 LLY Long Block Daily Driver 2004-2005 GM Duramax LLY Manufacturer: Choate Engineering Performance Manufacturer Part #: 66LLYLD Thoroughbred Diesel Part #: CEP66LLYLD Fitment Notes: 2004-2005 GM Duramax LLY
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
Full CNC blue print machining, (bore, deck, hone and line honed) - The Cylinder bores are blue print bored to a true 90 degrees from the crankshaft center line, prior to being diamond honed to within .0002" for precise piston to cylinder bore clearances. We main bore and line hone the crankshaft which is honed to precisely align the crankshaft in the engine block. We bore the block back to the crankshaft center line and hone the block to Ra 13 finish. The piston diameter measured to the nearest .0001" matched to cylinder bores. The Cylinder block is surfaced to a finish of 30 Ra 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.
Connecting Rods, new Damper and Flexplate for Automatic transmission. All Manual will be charged the appropriate charges and will be balanced to a stock flywheel we have in stock or you will need to send in your Aftermarket in first.
Check both wrist pin and crank pin to rod clearances
New Upgraded Pistons .10 - .30" 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
Choate Block Features: