Overview

Launched mid-1964, the first-generation Mustang created the legendary “pony car” class. With affordable pricing, stylish design, and endless customization options, it became a cultural icon. Built on the Ford Falcon platform, the first-gen Mustang featured several major styling and performance upgrades through its production run.

Key Highlights

• Created the “pony car” segment with long hood, short deck styling
• Offered Hardtop, Convertible, and Fastback (2+2) body styles
• Over a million sold in the first 2 years
• Shelby, Mach 1, Boss 302/429 introduced during this era

Model Year Changes

1964½

Initial release featuring 170ci I6, 260ci/289ci V8 engines. Standard drum brakes, basic interior, and unique “floating” horse grille.

1965

• Fastback body style added
• GT Equipment Group and “Pony Interior” introduced
• Alternators replaced generators

1966

• Instrument cluster redesigned
• Backup lights become standard
• Refined grille and ornamentation

1967

• First major restyle: larger body
• 390ci V8 added; Shelby GT500 introduced
• Dual hydraulic brake system added

1968

• New 302ci V8 engine
• Introduction of 428ci Cobra Jet
• Side marker lights, energy-absorbing steering column

1969

• New models: Mach 1, Boss 302, Boss 429
• More aggressive styling, quad headlights

1970–1973

• 1970: Boss 351 introduced, shaker hood scoops
• 1971–1973: Largest body style, focus shifts to luxury
• Emissions regulations reduce performance options

Special Editions & Packages

• GT Package: Fog lamps, disc brakes, suspension upgrades
• Shelby GT350/GT500: Built by Carroll Shelby with race-bred performance
• Mach 1 (1969+): Matte black hood, spoilers, and 351+ V8s
• Boss 302 & 429: Race-homologation specials with unique engines and styling
• California Special: Shelby styling for West Coast Mustangs

Engine & Power Stats

Transmission Options

• 3-speed Manual
• 4-speed Manual (Toploader, Borg-Warner T-10)
• 3-speed Automatic (C4, C6, FMX depending on year/engine)

Common Issues & Owner Tips

• Rust: Floor pans, rear rails, cowl vents, and quarters are prone areas
• Electrical: Aging wiring and fuse boxes cause shorts
• Suspension: Replace worn bushings, ball joints
• Leaks: Rear main seal, valve covers, radiator often leak on unrestored cars
• Drum Brakes: Less effective than modern systems; consider upgrades

Fun Facts

• Launched at the 1964 New York World’s Fair
• First-year sales beat projections by over 400%
• “Pony Interior” introduced embossed horses in seat backs
• Boss 429 required wider shock towers and hand-modified engine bays

Resources & Restoration

• Join the Mustang Club of America (MCA)
• Parts from NPD, CJ Pony Parts, Scott Drake, and others
• Forums: Vintage Mustang Forum, Mustang6G (for later gen fans)
• Restoration shops: Look for those with Mustang concours experience

Get the Workshop Manual

Want to restore or maintain your classic Mustang the right way? Get the detailed First Generation Mustang Workshop Manual with factory specs, wiring diagrams, and step-by-step procedures.