1973 Ford Mustang Mach 1: One Owner Since New, With Q-Code 351 And 4-Speed

Photo of a blue 1973 Ford Mustang Mach 1 fastback with aftermarket wheels, in a parking lot

Here we have a real survivor: a 1973 Mustang Mach 1 that has belonged to the same owner and parked outside for its entire 52 years. I will tell you his story and the car’s.

Mustang Mach1 1973 003

I guess it was about three to four years ago, during Covid, that I saw this car at an informal Cars & Coffee gathering outside Bagel Street Cafe in Danville, a place whose parking lot is visible from my office. From there, I noticed many vintage cars and many newer exotic cars showing up early on Friday mornings, so I stopped in to see. Many of the cars were either well-restored or new, like Corvettes, Porsches, and Ferraris, for example. I walked right past them as farther up I saw this well-worn Mustang, which I made a beeline towards. Pardon the picture quality, as this was at 0900 hours, sun low, and through trees.

Mustang Mach1 1973 002

The owner is Chris, pictured at the far left in the photo above. He’s owned this car from new, which is a long story.

As Mustang fans know, 1973 was the last year for the original Mustang platform — for 1974, it would be replaced by the Pinto-based Mustang II. Available only as a SportsRoof, the 1973 Mach I was the sportiest Mustang model, although it was mostly an appearance option, with a color-keyed urethane front bumper and moldings, racing mirrors, NASA-style hood scoops, tape stripes, a black rear-panel applique, and a special black honeycomb grille with inset “sportlamps.” It did come with the competition suspension and E70-14 Wide Oval tires, but the standard engine was the 302-2V. Mach 1 production was 35,440 for the year, out of 134,817 Mustangs sold for 1973.

1973 00087 05

Although the big-block V8s were no longer available in 1972–1973, Chris still wanted the biggest engine available. So, in October 1972, he put in an order for a 1973 Mach 1 with the 351-4V Cobra Jet engine, mated with the four-speed and Hurst shifter. However, a setback occurred when the dealer, Ed Chovanes of San Leandro, didn’t come up with the car and said his order was cancelled.

Mustang Mach1 1973 006

Chris, not to be deterred, called Ford directly and spoke with someone there. The short of it was that they told him to order any Mustang he wanted, and by March 1973, his Mach I arrived at Elmhurst Ford. Chris paid $3900 for the car.

Mustang Mach1 1973 024

So, the Mustang showed up, but there was a hand-print in the paint on the C-pillar that required the whole car to be repainted at the dealer. However, as the years have passed, that handprint has come back through and can now be seen. This repaint later became an issue…

Mustang Mach1 1973 011

See all those little specks in the paint? They have been there, all over the upper surfaces of the car, since 1980. What happened in 1980? Well, has anyone ever heard of the Med Fly?

Med Fly

This is a Med Fly, or better known as the Mediterranean Fruit Fly (Ceratitis capitata). An outbreak occurred in California in 1980, which led to a major agricultural crisis and large-scale eradication efforts. A single fly was found in Northridge and two in San Jose. This led to ground spraying, aerial spraying, quarantine by the CHP, and release of sterile male flies. Citizens were told to strip their fruit trees of all fruit, and you were fined and could even receive jail time for not doing so. Malathion was being sprayed in large regions of California and conducted at night. Naturally, there was an outcry concerning the pesticide being sprayed over towns. Agriculture was for it, while towns were not.

This aerial spraying went on in both North and South. Where I was in Orinda, there was no spraying. However, Chris lived in Castro Valley, and those dots on his car are from droplets of malathion. Of course, people made claims against the state for damages. From what I can learn, very few were ever paid. The state maintained that a warning went out before spraying occurred in your area, so you had ample time to prepare. Chris made a claim, but the state denied it on the basis that the car was a repaint and not the original paint. So, it still wears those spots today 45 years later.

Mustang Mach1 1973 010

Paint-wise, the next curiosity is the sport mirror. As you can see, the paint is fading, and what is that underneath? The mirror is Medium Green poly. Green doesn’t show up anywhere else on the car, which is either Silver Blue poly (3M) or Medium Blue poly (3K). (Personally, I see both colors here when I look at the paint chips.)

Mustang Mach1 1973 009

Now, the roof also has a patina that is similar on both sides, right down to bare metal. I’m a little puzzled since the repaint would have been over the existing paint, as it is on my Cougar. That means two layers of the same color, which should be pretty much impossible to rub off. One guess is that the dealer used one medium coat to minimize their cost. However, Chris maintains it was the constant use of a car wash in all the car’s early years.

Mustang Mach1 1973 003

What other wounds, or signs of older age, do we see? Chris said that the front trim piece got damaged, so it has more of a V in the middle. He also told me how one day he opened the hood and saw one of the fake cowl scoop trim pieces sitting on top of the engine. So, it now has “Single Ram Induction.”

Mustang Mach1 1973 007

As I said, Chris lived in an apartment in Castro Valley at the time. If any of our readers have ever lived in an apartment complex, you know getting a dent in your car can be quite common in those parking garages. I have a subtle one in my Cougar, and I only lived in an apartment for three months the summer of 1974. Those dents on his door were acquired during that same time.

Mustang Mach1 1973 023

The above picture shows that the driver’s door was keyed, as was common back then. You can also see the difference between the repaint above the decal and the original color inside the decal. The antenna is also now missing, but I forgot to ask the story on that.

Mustang Mach1 1973 004

Let’s go to the rear. Since the car has a berm behind it, I couldn’t get to ground level, but you can see that the back end looked to be pretty intact overall.

Mustang Mach1 1973 021

As we all know, the trunk isn’t very generous in these Mustangs.

Mustang Mach1 1973 027

Here are some more boo-boos acquired in life. One, a windshield hit by a lug nut…

Mustang Mach1 1973 026

… second, a crack when Chris hit the driveway curb to his apartment complex. How? Coming home, he saw his son at the side of the street. His son wanted to race his father. In the rush, Chris hit the driveway curb a bit too hard, and “crack!” went the windshield.

Mustang Mach1 1973 017

You’ve been waiting to see the 351 Cobra Jet engine, and here it is. The M-code 351 in 1971 had a 10.7:1 compression ratio versus the 11.0:1 in 1970. Cylinder heads had a slightly more open chamber than 1970. The one in Chris’s car is the 351-4V Q-code engine. Compression ratio was now around 8.0:1 due to the open heads, which gave superior emission characteristics. You did get a different intake, 4-bolt mains, a high-lift, long-duration camshaft with hydraulic lifters, higher rate valve springs,  a 715 CFM Autolite 4300 carburetor, and a dual-point distributor. Power was rated at 266 net hp for the Mustang. This car probably has a 3.25 rear. Apparently, the car could do 0-60 in 6.2 seconds, which isn’t bad at all. There are 136,000 miles on it today.

Mustang Mach1 1973 020

As you can see, there is no A/C in this car. However, there is a power steering oil cooler in the car, which I found interesting, as I had never seen a Ford with one of those. Meanwhile, spark plug access doesn’t look great, but it can be done.

Mustang Mach1 1973 018

Mustang Mach1 1973 019

Apparently there was an issue with leaking brake fluid in the past, so Chris kept brake fluid handy on both sides of the compartment, along with a funnel in the baggy. It has been there for many years now. Note that they reside in that extra space in the front, between the radiator support and the front grille. Why add that empty space? It simply made the Mustang look longer when it really didn’t need to look longer. My ’73 Polara has that same dead space. Designers — go figure.

Mustang Mach1 1973 012

Here is the Mach 1’s well-worn interior. Mustang fans can run their eyes over this and see what might have gone missing over the car’s 52 years of life.

Mustang Mach1 1973 014 1

Here we have what looks like an integrated armrest into the door panel. That certainly makes replacement or restoration much more difficult compared to an earlier generation like my ’68. One can see a green vinyl tape on the armrest.

Mustang Mach1 1973 013

Looking across the way, we can see the simulated wood is peeling off. Now, why is there any simulated wood in a Mach 1? We can also see a knee brace that Chris uses if he has to kneel on the ground. Chris is 77, so he got this when 25 years old (versus me at 16). So far, all my joints and knees, minus one ACL, are doing fine.

Mustang Mach1 1973 015

Last, I will throw this picture in for Jeff Sun, who once asked what more we can write about cars. Well, here on the right, by the glovebox, we have something called Echo-mate.

Mustang Mach1 1973 016

If you were a young driver in the very early 70s, then you know all about 8-track stereos; I had one in my Cougar, under the ignition and over my gas pedal foot. I added speakers both in the kick panel and the parcel shelf. By 1980, I had removed them to go back to the original Ford parts while I still could. Chris already had speakers in each door, so he added this to the car. It’s now an obscure piece of machinery. Technically, the system’s reverb added an extra dimension to the 8-track sound. However, he says the speakers no longer work, which he thinks is a wiring issue.

Mustang Mach1 1973 025

Chris wrote up a little history on the car that is sometimes out for the public to see. Currently, the car is only driven back and forth to a local market, maybe a few times a week. Chris did say it needs a tune-up, but his hands are affected by arthritis, so it is very hard for him now. I offered my help if he wanted, as I consider myself a decent mechanic.

So, there you have it. The age of the crowd in these gatherings is 90% over 70 years old, with the cars either less than 10 years old or older than 1973, even down to a Model T now and then. Most of the older cars have been modified in one way or the other from their original condition. Needless to say, a walk through the gatherings is a fun way to spend a Friday morning.

Related CC Reading

Curbside Classic: 1973 Mustang – No Apologies Necessary (by Paul N)

Curbside Musings: 1973 Ford Mustang Convertible – At A Canter (by Joseph Dennis)