1971 Ford Mustang Mach 1 429 Super Cobra Jet Drag Pack

Description

OFFERED WITHOUT RESERVE 

The Ford Mustang Mach 1 debuted in 1969 as a performance-oriented version of the Mustang fastback, designed to bridge the gap between the standard Mustang and the more extreme Shelby and Boss variants. The Mach 1 featured unique styling cues such as a matte-black hood, hood scoop, side stripes, and optional rear spoiler and louvers. It was only available in the SportsRoof (fastback) body style. 

Under the hood, the Mach 1 offered a range of potent V8 engines, including the legendary 429 Cobra Jet. The 2+2 car also featured upgraded suspension, dual exhausts, and performance tires, making it a true street machine. By 1971, the car could be had with the 375-horsepower 429 Super Cobra Jet (SCJ), a Drag Pack version with solid lifters, forged pistons, and external oil cooler. 

This ’71 Mach 1 with 429 SCJ mill began its life in New Jersey and was raced for several years before being involved in an accident. The car was sold and stored for years before being sent for restoration around 2019. The engine has a hi-rise intake, which required the modification of the Ram Air hood (raised and enlarged with welded metal), before it was refinished in its original Bright Red. The interior was not completed. 

Highlights 

• One of 531 1971 Mustang Mach 1 models ordered with the 429 Super Cobra Jet engine and factory Drag Pack, according to the included Marti Report

• Refinished in Bright Red paint with black body side stripes over black vinyl interior 

• Powered by a 429-cu-in, four-valve Super Cobra Jet Ram Air V8 rated at 375 hp and 450 lb-ft of torque (owner believes this replaced the original engine) 

• C6 heavy-duty three-speed automatic with B&M Star Shifter 

• The data plate decodes as: 

  • Body: 63R - Mustang SportsRoof (fastback body style) 

  • Color: 3 - Bright Red 

  • Trim: 5A - Mach 1 

  • Axle: Y - 4.11:1 rear axle ratio with locking differential (limited-slip) 

  • Trans: U - C6 heavy-duty three-speed automatic transmission 

  • DSO: 15 – Newark, New Jersey, District Sales Office 

  • Build date - 28 April 1971 

• The chassis number (1F05J198728) decodes as: 

  • 1 – 1971 model year 

  • F – Ford 

  • 05 – Mach 1 2-door SportsRoof 

  • J – 429 4V Cobra Jet Ram Air V8 

  • 198728 – Sequential production number 

  Features 

• 120-mph speedometer and JEGS 10,000-rpm tachometer on steering column

• Center-mounted iEquus gauge cluster (oil pressure, temperature, and voltage)

• Wood-rimmed steering wheel 

• BFGoodrich Radial T/A tires 

• Lakewood traction bars

  Known Imperfections 

• Replacement 429ci Super Cobra Jet engine

• A previous owner began a manual transmission conversion and installed the clutch pedal, but never finished the transition. The car retains its automatic transmission despite the presence of a clutch pedal.

• Dash gauges inoperable

• Center console-mounted gauges inoperable

• Pressing the gas pedal to the floor stalls the car (Owner says, “I’ve been told that this suggests the accelerator pump on the carb is malfunctioning, but I don't know for sure.”) 

• Radio has been removed

• Imperfections on dashboard, most notably on and around glove box 

• Passenger interior door release, driver’s side door jamb rubber handle, dome light cover, and passenger A-pillar trim is missing

• Scuffs on back of front seats 

• Rear seat seam is beginning to split near driver’s side seat belt opening 

• Some rust noted in the trunk and on the undercarriage

  Included 

• Marti Report

Ownership History 

The Maryland seller of this 1971 Ford Mustang Mach 1 has owned it since February 2023.  The seller says, “[The previous owner] had the car for probably 20 years sitting in a barn. When he passed, his widow transferred the title to her name — she didn't realize she could keep it in her spouse’s name and sell it as the executor of the estate. So, the last ‘sold date’ is misleading.”