GM 6.6L Duramax Diesel V8 Engines: How to Rebuild & Modify

By the late 1990s, General Motors recognized the need to modernize its aging diesel platform. The long-serving Detroit Diesel engine—designed more than two decades earlier—was known for reliability, fuel efficiency, and emissions compliance, but it was never intended to deliver the horsepower and torque demanded by modern diesel truck owners. As Ford Power Stroke and Cummins engines evolved into true performance leaders, GM responded with a clean-sheet design.

The result was the 6.6L Duramax Diesel V8, introduced in 2001. Over the past 25 years, multiple Duramax variants have been produced, all retaining the 6.6-liter displacement while steadily increasing horsepower, torque, durability, and efficiency. Today, many early and mid-generation Duramax engines are reaching the point where a complete rebuild or performance refresh is required.

What This Book Covers

GM 6.6L Duramax Diesel V-8 Engines: How to Rebuild and Modify delivers a complete, start-to-finish guide to rebuilding and upgrading these legendary diesel engines. Written in a clear, step-by-step format, this book includes over 375 full-color photos to guide you through every phase of the process.

• Duramax engine history and design evolution
• Diagnosis and teardown planning
• Engine removal and disassembly, including required special tools
• Inspection procedures and machine work
• Complete engine reassembly
• Reinstallation and startup guidance

Performance & Modification Insight

In addition to a factory-correct rebuild, this book includes a dedicated performance chapter featuring expert commentary from Gale Banks. This section explores proven upgrade strategies for increasing power, reliability, and efficiency while maintaining street and towing durability.

Who This Book Is For

• DIY diesel enthusiasts planning their first Duramax rebuild
• Experienced engine builders seeking platform-specific specs and procedures
• Duramax owners who want a deeper understanding of how their engine works
• Performance-minded builders looking to modify a 6.6L Duramax correctly

Why You’ll Want This Guide

Whether you plan to rebuild your own engine or simply want an authoritative reference on the GM 6.6L Duramax diesel platform, this book provides the technical depth, visual clarity, and real-world insight needed to get the job done right. From stock rebuilds to performance upgrades, it’s an essential resource for anyone working with Duramax diesel engines.

Rebuild Your Allison 1000- or 2000-Series Transmission with Ease

Get ready to tackle your next transmission rebuild project with confidence using this comprehensive and easy-to-follow book. Featuring step-by-step procedures, this guide will make rebuilding your Allison 1000- or 2000-series transmission a breeze.

First introduced in 1999 by Allison and in 2001 by General Motors, the Allison 1000- and 2000-series transmissions have become the most popular heavy-duty transmissions in use today. Used by various manufacturers such as GM, Freightliner, and International, millions of these transmissions are on the roads globally.

Automatic transmissions can often seem like a mystery, but this book simplifies the process and eliminates the guesswork. It covers the identification process, operation, diagnostic pointers, common failures, and repair and rebuild procedures for both the 1000- and 2000-series transmissions. Additionally, the book also covers upgrades to make the 1000 series more performance-oriented, as well as the companies that offer these upgrades.

This detailed instructional manual is written by Steve Garrett, a seasoned service engineer and instructor for General Motors and a member of the Automatic Transmission Rebuilders Association (ATRA). The book features high-quality photos of the rebuild process, as well as torque specifications and identification of all major and minor components. Whether you're performing a rebuild project on your own or just want to learn more about your Allison transmission, this book is the perfect resource for you.

• The Allison 1000- and 2000-series automatic transmissions were first introduced in 1999 and in 2001 for GM applications.
• This is the first book on rebuilding the Allison 1000- and 2000-series automatic transmissions.
• Filled with hundreds of step-by-step images, the book covers teardown, rebuilding, and reassembly for the Allison 1000- and 2000-series automatic transmissions.