Choate 6.6 LB7 Long Block Daily Driver

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  • Regular price $11,992.25
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Product Name: Choate 6.6 LB7 Long Block Daily Driver 2001-2004 GM Duramax LBZ
Manufacturer: Choate Engineering Performance

Fitment Notes: 2001-2004 GM Duramax LBZ

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:

  • Assembled by OUR Professional Team in house
  • Perfect for daily driving use, family haulers and some towing.
  • 5 year 100K warranty on our Daily driver builds with upgrade-able options
  • For more information on Choate Engineering Performance call us at 1-423-252-7177