Ford Differentials: How To Rebuild The 8.8 And 9 Inch by Joe PalazzoloFord Differentials: How To Rebuild The 8.8 And 9 Inch by Joe Palazzolo

Ford Differentials: How To Rebuild The 8.8 And 9 Inch

byJoe Palazzolo

Paperback | April 23, 2013

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The Ford 8.8- and 9-inch rear differentials are two of the most popular and best-performing differentials on the market. While the 8.8-inch differential is commonly used in late-model Mustangs, the 9-inch is the more popular and arguably the most dominant high-performance differential for muscle cars, hot rods, custom vehicles, and race cars. Built from 1957 to 1986, the 9-inch Ford differential is used in a huge range of high-performance Ford and non-Ford vehicles because of its rugged construction, easy-to-set-up design, and large aftermarket support. The 9-inch differential effectively transmits power to the ground for many classic Fords and hot rods of all types, but it is the choice of many GM muscle car owners and racers as well. These differentials have been used extensively and proven their mettle in racing and high-performance applications.

The Ford 8.8- and 9-inch must be rebuilt after extensive use and need a variety of different ratios for top performance and special applications. This Workbench book provides detailed step-by-step photos and information for rebuilding the differentials with the best equipment, installing the gear sets, and converting to Posi-Traction for a variety of applications. It describes how to disassemble the rear end, identify worn ring and pinion gears, other damage or wear, and shows step-by-step rebuilding of the differential. It also explains how to select the right differential hardware, bearings, seals, and other parts, as well as how to set ring and pinion backlash so that the rear end operates at peak efficiency.

Aftermarket 9-inch performance differentials from manufacturers including Currie, Moser and Strange are reviewed and you learn how to rebuild and set up these high-performance aftermarket differentials. In addition, this book provides a comprehensive identification chart to ensure readers properly identify the model and specifics of the 9-inch differential. Chapters include axle identification, inspection, and purchasing axles for rebuilding; differential tear down; ring and pinion gear removal; inspection and reassembly; drive axle choices; and more.

Joe Palazzolo is currently a chief engineer at GKN Driveline Torque Technology Group where he manages the mechanical design and development of new automotive torque transfer devices, concepts, and integration into production applications. He has received numerous patents for his innovative work and creativity in advancing vehicle mobil...
Title:Ford Differentials: How To Rebuild The 8.8 And 9 InchFormat:PaperbackDimensions:144 pages, 11 × 8.5 × 0.38 inPublished:April 23, 2013Publisher:CartechLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:161325038X

ISBN - 13:9781613250389

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Table of Contents



What is a Workbench® Book? 

Chapter 1:

Axle History and Identification 
Front Axle Applications 
Part Numbers 

Chapter 2:

Axle Removal 
Safety Equipment 
General Procedures 
Brake System Removal 
Leaf Spring Removal 

Chapter 3:

8.8-Inch Axle Disassembly and Inspection 
Optional Upgrades 
Disassembly Preparation 
Axle Housing Disassembly 
Traction-Lok Differential Disassembly 

Chapter 4:

8.8-inch Axle Assembly 
Traction-Lok Differential Assembly
Axle Housing, Wheel End Bearing and Seal Assembly 
Ring and Pinion Gear Set Assembly 

Chapter 5:

9-Inch Axle Disassembly and Inspection 
Physical Differences 
Strength Differences 
Axle Shaft Splines 
Disassembly Procedure 
Brake Drums and Axle Shaft Dissambly 
Third Member and Pinion Cartridge Removal 

Chapter 6:

9-Inch Axle Assembly 
Open-Differential Assembly 
Traction-Lok Assembly 
Third-Member Assembly 
Axle Housing Assembly 

Chapter 7:

Ring and Pinion Assembly 
Face-Hobbed Gears 
Face-Milled Gears 
Break&In Procedure 
Gear Ratio Selection and Tooth Combinations

Chapter 8:

Performance 9-Inch Axle Installation 
Vehicle Acquisition and Inspection 
Drivetrain Upgrades 
Transmission Installation 
Spring Pocket Kit Installation 
Wheel Tub Installation 
Axle Ratio Selection 

Appendix: 9-Inch Axle Identification Codes

Source Guide