2001-2004 LB7 Duramax Stealth Mach 2 67mm Drop In Turbo

This custom-built 67mm compressor wheel is specifically designed to maximize peak power while maintaining a wide, useable powerband. To fit the monster compressor wheel Calibrated Power Solutions 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. Even the wastegate has been updated 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 67G2 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. The 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.

To compliment this turbo we highly recommend our LB7 Stage 3 High Flow Intake Bundle Kit (WCF100712) to maximize performance, EGT control, and spool up. Looking for more yet? Add the stealth 67 in addition to one of our S400/Stock Compound kits and you've got the recipe for 1000 RWHP.

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

Replaces the following GM Part numbers: 8973077111, 8971884545, 97720748, 97307711, 766172-0001, VIDR, VIDQ, VICU

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.