2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Crate Engines

Whether you're restoring your GM truck or are looking to completely upgrade your truck with added power and reliability, our crate engines are the perfect choice to get the most from your truck! With reputable brands, we offer a vast selection of reliable and powerful crate engines and rebuild kits that truly will take your truck to the next level of power and reliability. Pair your new crate engine with our selection of Transmission Upgrades! GM Duramax Fitments: 2001, 2002, 2003, 2004 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments. 

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DFC Diesel TH660104LB7SOALBHD Tow/Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALBHD Tow/Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALBHD Tow/Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALBHD Tow/Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALBHD Tow/Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALBHD Tow/Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

DFC Diesel

DFC Diesel TH660104LB7SOALBHD Tow/Haul HD Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

SKU: DDUTH660104LB7SOALBHD
$27,677.69
DFC Diesel TH660104LB7SOALB Tow/Haul Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALB Tow/Haul Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALB Tow/Haul Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALB Tow/Haul Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALB Tow/Haul Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel TH660104LB7SOALB Tow/Haul Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

DFC Diesel

DFC Diesel TH660104LB7SOALB Tow/Haul Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

SKU: DDUTH660104LB7SOALB
$18,653.52
DFC Diesel SS660104LB7TKSOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK

DFC Diesel

DFC Diesel SS660104LB7TKSOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK

SKU: DDUSS660104LB7TKSOALBCC
$15,539.34
DFC Diesel SS660104LB7SOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

DFC Diesel

DFC Diesel SS660104LB7SOALBCC Street Series Speed Of Air Long Block Callies Crankshaft (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

SKU: DDUSS660104LB7SOALBCC
$15,539.34
DFC Diesel SS660104LB7TKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK
DFC Diesel SS660104LB7TKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK

DFC Diesel

DFC Diesel SS660104LB7TKSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7 TOPKICK

SKU: DDUSS660104LB7TKSOALB
$13,460.38
DFC Diesel SS660104LB7SOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7
DFC Diesel SS660104LB7SOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

DFC Diesel

DFC Diesel SS660104LB7SOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2001-2004 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LB7

SKU: DDUSS660104LB7SOALB
$13,460.38
Industrial PDM-LB7STKLB Stock Long Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Industrial PDM-LB7STKLB Stock Long Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Industrial Injection

Industrial PDM-LB7STKLB Stock Long Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: IISPDM-LB7STKLB
$14,990.12
Choate Engineering CEP66LB7SD 6.6L Duramax Daily Driver Short Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Choate Engineering CEP66LB7SD 6.6L Duramax Daily Driver Short Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Choate Engineering

Choate Engineering CEP66LB7SD 6.6L Duramax Daily Driver Short Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: CHTCEP66LB7SD
$9,000
Choate Engineering CEP66LB7SW 6.6L Duramax Workhorse Short Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Choate Engineering CEP66LB7SW 6.6L Duramax Workhorse Short Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Choate Engineering

Choate Engineering CEP66LB7SW 6.6L Duramax Workhorse Short Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: CHTCEP66LB7SW
$11,500
Choate Engineering CEP66LB7LW 6.6L Duramax Workhorse Long Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Choate Engineering CEP66LB7LW 6.6L Duramax Workhorse Long Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Choate Engineering

Choate Engineering CEP66LB7LW 6.6L Duramax Workhorse Long Block | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: CHTCEP66LB7LW
$14,800
$15,000
Choate Engineering CEP66LB7LD 6.6L Duramax Full Running Daily Driver | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
Choate Engineering CEP66LB7LD 6.6L Duramax Full Running Daily Driver | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Choate Engineering

Choate Engineering CEP66LB7LD 6.6L Duramax Full Running Daily Driver | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: CHTCEP66LB7LD
$12,500

2001-2004 6.6L Silverado & Sierra 2500HD/3500HD

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