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VP44 injection pump
VP44 injection pumps

Edge Products shipping free next day air
Edge Products

S&B intakes
S&B Intakes

Hypertech max energy free next day air special
Hypertech Max Energy
diesel stock replacement parts

GM Duramax 6.6L LB7 Diesel Performance

Thoroughbred Diesel has been adding performance modifications to GM Duramax LB7 diesel pickup trucks for around 10 years now at our shop in Winchester Kentucky and online at ThoroughbredDiesel.com since 2002. We are a experienced diesel company that offers free advice daily. When it comes to your Duramax, we understand that allot of factors go into what you need for your diesel. Your budget, fuel economy, horsepower, torque, among many other things can all play a factor in what performance products are best for your diesels needs. If you have any questions about which performance products are best suited for your Duramax stop clicking and call us toll free at 855-737-4966, we give free advice.

Thoroughbred Diesel offers all the top name brand aftermarket diesel manufactures. Shop online for aFe, Diablosport, Edge Products, Superchips, Quadzilla, Pacbrake, BD Power, Hypertech, MBRP, FASS, MBRP, Bullydog, and so many more. Shop below for deals on programmers, exhaust, intakes, exhaust brakes, fuel systems, clutches, turbo's, injectors, and more. Shop online for Duramax accessories at ThoroughbredDiesel.com and you will get free shipping on almost every products, superior customer service, and fast shipping. Why shop anywhere else?
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Attention: If you have a GM Duramax, please verify your engine type before ordering any product. You will either have an LB7, LLY, or LBZ motor, many of the products we offer are not interchangeable with all three engines.

To Verify: Check the 8th digit in the VIN number,
If it's a 1 you have the LB7 motor
If it's a 2 you have the LLY motor

  • Package Deals - If you are looking to purchase a programmer, exhaust, and intake all at the same time, pick up the phone and give us a call. We offer discounts on package deals. Discount depends on which brands you buy from us, certain brands we can offer very big savings, other brands not as much, but no matter what, we can give you a great deal!
Popular Performance Products for the 6.6L LB7 GM Duramax
air intakes performance programmers
Cold Air Intake (CAI) Performance Programmers
exhaust systems air filters
Cummins Exhaust Air Filters
cat delete pipe clutches differential cover
Cat/Muffler Delete Pipe Clutches Differential Covers
PRXB exhaust brake exhaust tip FASS fuel system
Exhaust Brakes Exhaust Tips FASS fuel system
Bully Dog fluid damper fuel cell
Saves on gas
fuel filter
Fluid Damper Fuel Cell Fuel Filters (OEM)
gauges injector muffler
Gauges / Gauge Kits Injectors Mufflers
Nitrous Express NXd diesel nitrous system transmission pans truck stacks
Nitrous System Transmission Pans Truck Stacks
BD cool down timer turbo systems  
Turbo Cool Down Timer Turbo Systems

About the LB7 Engine

The LB7 was the first to be introduced in 2001. The V8 engine was a 6.6 L (402.8 cu in) and it had 300 hp (224 kW) and 520 ft·lbf (705 N·m) of torque. It is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads.

The Duramax was on the Ward's 10 Best Engines list for 2001 and 2002.

The following trucks use the LB7:

  • Chevrolet Kodiak/GMC Topkick
  • Chevrolet Silverado/GMC Sierra HD
  • 2005 Hummer H1

Specifications

  • Engine Description: LB7
  • Displacement: 6.6L / 403 in³
  • Bore x Stroke: 4.06 in (103 mm) x 3.90 in (99 mm)
  • Block / Head: Cast gray iron / Cast aluminum
  • Aspiration: Turbocharged & Intercooled
  • Valvetrain: OHV 4-V
  • Compression: 17.5:1
  • Injection: Direct; Bosch High Pressure Common-rail
  • Power / Torque : 300 hp (220 kW) @ 3,100 rpm / 520 ft·lbf (705 N·m) @ 1,800 rpm
Buy from a experienced diesel company, call us toll free at 866-737-4966, we give free advice.
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123 Westside Drive
Winchester, KY 40391
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