04.5-06 Duramax LLY

The Duramax LLY was introduced in 2004 to replace the popular LB7. Like the LB7, the LLY utilizes a high pressure common rail direct injection system. The LLY was General Motors' first attemp at implementing emission controls on a diesel engine to meet stricter emissions requirements in the future. The LLY adopted a variable geometry turbocharger (VGT) and exhaust gas recirculation (EGR) system to help reduce emissions. Huge changes to the LLY debuted in 2006, but the engines were mechanically identical.

Years Produced 2004.5 - 2006
Displacement 403 cubic inches, 6.6 liters
Configuration 90 degree V8
Compression Ratio 17.5:1 (16.8:1 in 2006)
Bore 4.06 inches
Stroke 3.90 inches
Aspiration • Garrett variable geometry turbocharger (VGT)
• air to air intercooler
Valvetrain OHV, 4 valves per cylinder
Injection • Direct injection
• Bosch high pressure common rail, CP3 injection pump
• 23,000 psi max injection pressure
Horsepower • 310 hp @ 3,000 RPM
• 310 hp @ 3,000 RPM (2006)
Torque • 520 lb-ft @ 1,600 RPM
• 605 lb-ft @ 1,600 RPM (2006)
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GM 97780144 LLY Duramax Diesel 6.6L Fuel Injector

This is a genuine GM factory replacement injector manufactured by Bosch. This unit will come with ..

$350.00

GM Allison 1056 Torque Converter - Billet Cover - Triple Disk 2001-2010

This is our journeyman converter that incorporates an OEM style stator and custom modified impelle..

$1,570.00

GM Allison 1057 Torque Converter - Triple Disk 2001-2010

Our 1057-3D converter established a benchmark for performance torque converters. Often referred to..

$1,570.00

GM Allison LB7 and LLY Billet Flex Plate 2001-2005

This replaces the factory flywheel/flex plate with a improved billet one piece design, e..

$709.00

GM Allison LB7/LLY Gmax-5R-1 Kit 2001-2005 Raybestos Manufactured SunCoast Designed

Parts included are: C-1- Custom stepped apply plate, (8) GPZ C1 external clutches, (8) GPZ internal..

$1,089.00

GM Allison LLY Gmax-5R-2 Kit 2004.5-2005 Raybestos Manufactured SunCoast Designed

Parts included are: C-1- Custom stepped apply plate, (8) GPZ C1 external clutches, (8) GPZ internal..

$1,486.00

GM Allison LLY Gmax-5R-3 Kit 2004.5-2005 Raybestos Manufactured SunCoast Designed

Parts included are: C-1- Custom stepped apply plate, (8) GPZ C1 external clutches, (8) GPZ internal..

$1,780.00

GM Allison Transfer Case Brace 2001-2007.5

Due to the cantilever effect of the rear trans mount, the transmission rear adapter housing is pro..

$223.00

GM Allison TransGo® Shift Kit® 2001-2005

You’re looking at a NEW Transgo® Allison Shift Kit® for the 2001-2005 Chevrolet & GM..

$218.00

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