6.6 Duramax LB7 Engine Model C Engine 2001-2004 - Duramax Diesel Engine.
6.6 Duramax LB7 Engine built by Choate Engineering Performance. Engineered to outlast the factory engines. Engineered to fix all the flaws of the factory engine. They say the definition of insanity is doing the same thing over and over expecting different results. In other words, you would be insane to purchase another factory engine from GM. Choate Engineering Performance is the most sane option. Machined and Built in the USA.
- Pressure Test Heads
- Remanufactured Cylinder Heads
- All New Valve Guides
- Install New Valve Seals
- Test Spring Tension
- New Freeze Plugs
- Keyed Crankshaft
Machining Processes
- Full CNC blue print machining, (bore, deck, hone and line honed)
- 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.
- Bored and line hone the crank bore housing to precisely align the crankshaft in the engine block.
- 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.
- Check both wrist pin and crank pin to rod clearances
- New Upgraded Pistons
- New OE Lifters
- Lifter Guides
- OE Crank Flange Bolts
- Crankshaft is Polished and ground to .0005 concentricity or less
- Camshaft - Polished and Inspected
- New Rod Bearings
- New Main Bearings
- New Cam Bearings
Duramax LB7
Vehicles
- 2001-2002 GMC Sierra 2500 HD SL
- 2001-2002 GMC Sierra 3500 SL
- 2001-2004 Chevrolet Silverado 2500 HD
- 2001-2004 Chevrolet Silverado 2500 HD LS
- 2001-2004 Chevrolet Silverado 2500 HD LT
- 2001-2004 Chevrolet Silverado 3500
- 2001-2004 Chevrolet Silverado 3500 LS
- 2001-2004 Chevrolet Silverado 3500 LT
- 2001-2004 GMC Sierra 2500 HD SLE
- 2001-2004 GMC Sierra 2500 HD SLT
- 2001-2004 GMC Sierra 3500 SLE
- 2001-2004 GMC Sierra 3500 SLT
- 2002-2004 GMC Sierra 2500 HD
- 2002-2004 GMC Sierra 3500
- 2003-2004 GMC Sierra 2500 HD WT
- 2004-2004 Chevrolet Silverado 2500 HD WT
- 2004-2004 Chevrolet Silverado 3500 WT
- 2004-2004 GMC Sierra 3500 WT
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.