1971 Ford Mustang Mach 1 429 Cobra Jet

Description

The 1971 Mustang Mach 1 equipped with the 429 Cobra Jet–Ram Air (J-Code) engine represents one of the most formidable muscle cars of its era. Powered by a 429ci V8 rated at 370 horsepower, the J-Code variant features a functional Ram Air induction system that channels cool air through vacuum-operated hood scoops into a sealed air cleaner, enhancing performance and throttle response. Its distinctive “NASA” duct hood, black grille, and body-colored urethane front bumper gave it a commanding presence.

Finished in Light Pewter Metallic over a black cabin from the factory, this Mach 1 429 Cobra Jet features a heavy-duty C-6 automatic transmission backed by a 9-inch rear axle with performance gearing. With its numbers-matching drivetrain and factory Ram Air setup, this 1971 Mach 1 J-Code stands as a rare and highly collectible example of Ford’s peak muscle car engineering.

This Mach 1 is now offered with copies of the original invoice and window sticker, a Marti report, some service records, and a clean Nebraska title in the seller's name.   

Factory Equipment 

• 429ci 4-valve Cobra Jet Ram Air V8  (numbers-matching, see photo gallery for stamping)

• C-6 automatic transmission 

• Power-assist front disc brakes 

• Power steering 

• Mach 1 Sports Interior 

• Deluxe steering wheel 

• Sport Deck rear seats 

• Rear deck spoiler 

• AM radio 

• Tinted glass 

• Sport option wheel covers 

• Data Plate information  

  • Serial Number 1F05J107062 

  • 1: 1971  

  • F: Built at Dearborn 

  • 05: Mustang Mach 1 Two-Door SportsRoof 

  • J: 429-4V Cobra Jet Ram Air V-8 Engine 

  • 107062:  Serial Number of this Ford scheduled for production at Dearborn 

  • 09/70: September,1970 

  • 63R: Mustang Mach 1 2Two-Door SportsRoof 

  • V: Light Pewter Metallic Paint, Ford #3314-A 

  • 5A: Black Knit Vinyl Mach I Bucket Seats 

  • S: 3.50 Traction-Lok Rear Axle 

  • U: C-6 Select Shift Automatic Transmission 

  • 41: Chicago DSO (District Sales Office) 

Modifications 

• Bosch tachometer 

• Lloyd floor mats 

• Hammond rear window louvers 

• Wheel Vintiques 10x15 Magnum 500 rear wheels 

• Headlight relay kit 

• Exterior “hockey stick” style stripes 

Servicing & Documentation  

• Seller states this Mach 1 was mechanically and cosmetically restored under previous ownership 

• March 2024: Replaced air shock lines and battery 

• September 2020: Changed oil and filter, transmission fluid and filter, and transmission pan gasket at 74,243 miles 

• August 2018: Compression test results at 73,877 miles 

  • #1 – 180 PSI 

  • #2 – 185 PSI 

  • #3 – 190 PSI 

  • #4 – 200 PSI 

  • #5 – 185 PSI 

  • #6 – 185 PSI 

  • #7 – 180 PSI 

  • #8 – 190 PSI 

• April 2017: Installed Monroe air shocks 

• 295/50R15 BFGoodrich Radial T/A tires with 2016 date codes 

Known Imperfections  

• Paint chip on top of the left side front fender 

• Paint chip on the left side rear fender 

• Wear on driver’s seat 

Ownership History 

This 1971 Ford Mustang Mach 1 was purchased by the seller in 2017 out of Dayton Beach, FL and has reportedly been maintained and enjoyed during the fair-weather seasons in Nebraska. The seller states this Mach 1 was restored under previous ownership, but no records came with the car when he purchased it.

From the seller, “This car gets a lot of attention and thumbs ups when you take it on the road!” 

Included Items 

• Marti Report (see photo gallery)

• Copies of the original invoice and window sticker (see photo gallery)

• Service records from current ownership

• Factory spare wheel/tire and jack 

• Service records from seller’s ownership 

• Two sets of keys 

• Removed factory rear sway bar 

• Removed factory rear wheels