LB7 Stealth Mach 2 (67) Turbo (2001-2004)
Our custom-built Mach 2 (67mm) compressor wheel is specifically designed to maximize peak power while maintaining a wide, useable powerband. To fit the monster compressor wheel we've developed a unique, OEM appearing, anti-surge ring, which nestles in the factory compressor cover. Matching the class-leading compressor performance meant updating the center section which is fitted with a 360-degree thrust bearing to increase reliability under heavy load transitions. We even updated the wastegate to make sure you have the most amount of power and the quickest spool-up.
With the all-new compressor side and center section put together a turbine wheel and exhaust housing upgrades had to be made. The LB7 Stealth Mach 2 (67) features the largest turbine available in an IHI-style (stock LB7 turbo) frame. This dramatically reduces drive pressure and allows for serious power production even at high RPM where the IHI typically falters. Our monster turbine helps you achieve as close to a 1:1 ratio between drive and boost pressure. This not only helps make more power but also manages EGT's under heavy load.
Please Note: This turbocharger does not fit on California emissions-equipped trucks.
The Stealth Mach 2 (67) has undergone testing to demonstrate that it complies with federal emissions regulations. This testing provides the reasonable basis required by the standards defined by the EPA. Here you can find a PDF that documents this testing.
Want to talk with an expert about this product? Call us at 815-568-7920 Monday through Friday from 9-5 CST.
As low as $2,450.00
In stock
The unique advantage of having our tuning experts work on this turbocharger design can’t be understated. DuramaxTuner’s experience with the particulars of how the Duramax platform responds to tuning adjustments and airflow changes was a crucial component in building you the perfect turbo upgrade.
Building the LB7 Stealth Mach 2 (67) meant designing a turbo that's safe to tow reasonable loads with, fun to drive every day, and a class-leading competitor. If you think street-able, clean, stealthy power is cool then this is the turbo for you! We left no stone unturned when engineering the LB7 Stealth Mach 2 (67). Our custom profile on the compressor wheel matched to the custom turbine wheel means you get power and drivability.
- 800 HP Peak Power
- Direct fit for
- 2001 6.6L Duramax
- 2002 6.6L Duramax
- 2003 6.6L Duramax
- 2004 6.6L Duramax
- Dyno Proven
- Custom Billet Compressor Wheel
- Stealth HIGH-FLOW Turbine Assembly
- Engineered Anti-Surge Compressor Cover
- Stock Appearing
- Quick Spool-Up
- Wide Torque Curve
- Useable Horsepower
This Turbo is Designed for you if you...
- Daily drive your truck
- Reliability and Performance are your top priorities
- Have a built short block or plan to build your engine in the future
- Prefer to simply swap your old turbo out for a new one
- Want more power when you need it, but still have excellent street manners
- Have installed or plan to install modified injectors
- Have installed or plan to install a built transmission
- Have installed or plan to install dual Cp3's or stroker Cp3
Add on a Stealth Boost Tester.
Boost leaks can kill diesel engines. They cause higher EGTs, decrease your power, and lower fuel economy. Properly being able to test your entire charged air system is essential to getting peak performance and longevity out of your diesel engine. Charged air systems include everywhere from the turbocharger to the intake manifold. Your intercooler system, Exhaust Gas Recirculation components, and even the Turbocharger compressor cover can all develop boost leaks. This boost tester is exactly what you need if you work on diesel trucks regularly or just want to check the condition of your engine's charge system. Here's what you can get:
- Heavy Duty Regulator
- Extremely Accurate
- Testes Entire Charge system
- Precise control over test conditions
- Easy to use and read
- Premium parts built to last for a lifetime
- High-quality seals
- Liquid gauge prevents erratic readings
- Metal construction
- CNC Precision-Cut Adapter
- Perfect Fitment
- Clean look
- Intelligent design
- Made from high-quality materials
- Made and assembled in the USA
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LB7 Stealth 67G2 Details |
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Fitment Specifications |
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Year |
OEM |
Models |
OEM Part #(s) |
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2001, 2002, 2003, 2004 |
Chevy |
2500 HD, 3500 HD |
8973077111 8971884545 97720748 97307711 766172-0001 VIDR VIDQ VICU |
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2001, 2002, 2003, 2004 |
GMC |
2500 HD, 3500 HD |
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Measurement Specifications |
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Compressor - Wheel Inducer |
Compressor - Inducer Bore |
Compressor - Wheel Blade Count |
Turbine - Wheel Exducer |
Turbine - Wheel Inducer |
Turbine - Wheel Blade Count |
Peak Power |
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67mm |
68mm |
11 blade |
71mm |
77mm |
10 |
800 RWHP |
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Maximum Recommended Boost Pressure (psi) for LB7 Stealth 67G2 |
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Altitude (ft) |
Barometric Pressure (psi) |
Baro (inHG) |
Max Safe Boost (psi) |
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-1000 |
15.2 |
31.02 |
44.1 |
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0 |
14.7 |
29.88 |
42.6 |
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1000 |
14.2 |
28.86 |
41.2 |
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2000 |
13.7 |
27.84 |
39.7 |
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3000 |
13.2 |
26.83 |
38.3 |
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4000 |
12.7 |
25.81 |
36.8 |
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5000 |
12.2 |
24.8 |
35.4 |
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* We are proud to offer our 1-year Stealth Warranty.
* 49 State legal basis tested and approved - PDF documents
* Not for sale in the state of California.
* ALL PICTURES SHOWN ARE FOR ILLUSTRATION PURPOSES ONLY. THE ACTUAL PRODUCTS MAY VARY DUE TO PRODUCT ENHANCEMENT.
* Prop 65WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
