Inspect the 1969-1970 Ford Mustang Boss 429 from bumper to bumper, including the storied Boss 429 engine, 4-speed Toploader transmission, interior, paint codes, options, and more.
Author Dan Burrill collaborated with Boss 429 expert Denny Aldridge to give you the straight story of developing this monumental engine, engineering the components and parts to fit the engine and chassis, and assembling the cars.
The Boss 429 has its roots in NASCAR racing. Chrysler’s 426 Hemi was dominating NASCAR competition, and Ford’s attempt to race the 427 SOHC “Cammer” had failed. By 1967, Ford had enough, and the Boss 429 was the answer. So, Ford and its engineers, with the help of Holman-Moody, returned to the drawing board to create a clean-slate big-block engine to beat the dominant Hemi.
The Mustang fastback chassis was the obvious choice for the engine, but the Boss 429 had an enormous footprint, so it wouldn’t easily fit in the engine bay. Although it would have been far easier to install the engine in the full-size Galaxie, these cars were not as popular or widely revered as the Mustang. Ford and specialty car builder Kar-Kraft faced the daunting task of modifying the Mustang fastback to create what’s considered to be Ford’s greatest big-block muscle car, the Boss 429. This is the story of the car, its equipment, and manufacturing history.
Each volume in the Muscle Cars In Detail series provides an introduction and historical overview, an explanation of the design and concepts involved in creating the car, a look at marketing and promotion, an in-depth study of all hardware and available options, and an examination of where the car is on the market today. Also included are paint and option codes, VIN and build tag decoders, as well as production numbers.
Dedication 
Acknowledgments 
Introduction 
Chapter 1: The Boss Project and Vehicle Identification 
Vehicle and Engine Identification 
Selecting the Mustang 
Kar-Kraft: Ford’s Factory Speed Shop 
Selling the Boss 429 Mustang 
Limited Options List 
Chapter 2: The Engine 
Engine Variations 
Rotating Assembly 
Solid Lifter Conversion 
Intake and Exhaust 
Dry-Deck Cylinder Heads 
Toploader 4-Speed Transmission 
Chapter 3: Chassis and Suspension 
Assembly Line Program 
Suspension 
Rear Suspension 
Wheels 
Chapter 4: In Competition 
Engine Development
Total Performance 
Drag Racing 
Chapter 5: Dealer Options and Model Year Changes
Accessories and Options 
Model Year Changes 
Appendix: Boss 429 Details and Specifications 
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