The Ford Mustang GT Must Diet

Bob Elton
by Bob Elton
the ford mustang gt must diet

No question, the Ford Mustang is a galloping success. Both the base and GT models are a runaway success, contributing significant revenue to their corporate parent. And now legendary racer, sports car constructor and chili magnate Carroll Shelby is adding some hot tamales to the feed bag. The Shelby Cobra GT500 goes on sale any second now, saddled with a supercharged 5.4-liter V8 good for 500hp. Although there’s little doubt that Shelby’s performance package will be a well-engineered addition to the core car’s strengths, it’s still a case of too much too late.

Let’s Review. For 50 percent more than the MSRP of a Mustang GT, the GT500 buyer gets a supercharger, an intercooler, a race-proven T56 six-speed manual transmission, suspension mods, 18” wheels, wider tires, distinctive spoiler and grill treatments and one whole Hell of a lot of Shelby badging. Oh, and roughly 400 pounds of additional weight, which push this pony car into the Crown Vic weight class. And that’s what I’m talking about: Ford’s decision to add horsepower to the Mustang instead of reducing weight.

It may be a piercing glimpse into the obvious, but Ford could have made a serious performance car out of the Mustang GT simply by shedding weight. In fact, if the 300hp GT lost 700 pounds, it would have the same power-to-weight ratio as the 500hp Shelby GT500. A leaner, meaner, altogether keener Mustang GT would find a willing market, and serve notice to GM and DaimlerChrysler that Ford isn’t going to cede the ponycar market quite yet. There are a number of ways, most of them relatively cheap, to ditch the Mustang’s extra pounds.

Start by eliminating the air conditioning. This lightweight GT (call it the GT-L) would be a potential race-ready road car, not a boulevard cruiser for hot nights in Vegas. If it wasn’t for the Federal standards about defrosters, you might be able to leave off the heater. But even with a heater and defroster, the elimination of the air conditioning unit would drop a lot of mass, and some drag on the engine as well. Next, ditch the power windows. If Ford made the call, its suppliers could come up with a manual window regulator in a heartbeat.

Likewise, lose the electric locks. Real racers can push their own lock buttons down. Ditto for the electric trunk release. Once those are gone, the module that controls these functions and related wiring can also be deleted, saving even more weight. The radio and CD player can also go; the glorious fury of the Mustang GT’s V8 is music enough to a performance junkie. And while we’re at it, deep-six the sound deadening material behind the front seats. And the back seats, rear seat belts and shoulder harnesses.

Ford can use the front fascia from the base six cylinder Mustang, delete the fog lights and save a few more pounds. The cladding on the rocker panels can go, too. Who cares if the tires throw a little dirt on the side of the car? And off with the spoiler. A real racer is going to fashion a spoiler that works, rather than one that satisfies the design committee. Removing the spare tire, jack and tools will also liberate some major heft.

These simple steps would get the Mustang coupe’s weight near the goal of 2600 lbs. Several more radical changes would get the weight to less than 2600 pounds. How ‘bout manual steering? Back to the supplier for a manual rack and pinion gear. This would allow the elimination, and drag, of the power steering pump. A Mustang with manual steering would probably be a bear to park, but pistonheads aren’t going to buy this car for their grandmothers. The final step: kill the center console. This would require some new parts, but the existing console has to be a lot heavier than a few rubber boots around the shifter.

Tweak the car’s suspension, add appropriate decals and there you have it: a Mustang that’s fully competitive with the Shelby version, and a lot better handling to boot. As less is sometimes less, the Mustang GT-L’s development costs would not be prohibitive. Lest we forget Shelby himself jettisoned ballast when he developed the GT350, ‘way back in the 60s. It was a belter that burnished the image created by the Cobra. Porsche, Mazda, Honda and several other manufacturers build lightweight performance cars like these. Even better for Ford, they charge more money for them. That’s a business plan that FoMoCo should latch onto pronto.

Of course, not many people would buy this car. But there is simply no underestimating the street cred a GT-L would generate for Ford and its entire Mustang franchise. Of course, there’s nothing to stop ole Shel from putting his Mustang on a diet…

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  • John_14620 John_14620 on Oct 25, 2006

    I totally agree that the GT 500"s 4,000lb weight is way too much. The GT is a bit too porky for my taste too. But getting it's weight down to 2,600lb's is completely unrealistic for anything but a dedicated race car or a ultra-niche vehicle. From what I understand, a Corvette Zo6 has a 3,150lb curb weight. GM achieved this weight using fiberglass, aluminum, magnesium, etc. I doubt that eliminating all the "luxuries" in the Stang would even get it down to the Vette's weight without some major re-engineering of the whole vehicle. While I'm all for lightwheight vehicle's, most people(including me) don't want a car without things like AC, Stereo, at a minimum. If you want to race, buy a race car. But on the street I'll keep my AC thank you very much. BTW WTH does "IMO" mean? I have no clue. That is driving me crazy!

  • Michael Karesh Michael Karesh on Oct 25, 2006

    IMO = "in my opinion." Also, IMHO, "in my honest opinion."

  • ToolGuy Price dropped $500 overnight. (Wait 10 more days and you might get it for free?)
  • Slavuta Must be all planned. Increase price of cars, urbanize, 15 minutes cities. Be poor, eat bugs
  • Sid SB Not seen a Core without the performance pack yet. Prefer the more understated look of the Core vs the Circuit, but both are great fun to drive.
  • El scotto Tesla has one team making EV's because that is all Tesla does. Farley -rolls eyes- decided to split Ford into two huge warring factions: ICE vs EV. Hey Jimbo, it says "FORD" on the buildings.Lord only knows what GM did internally because it's GM. I'm betting it's like Ford pitting ICE vs EVs. With GM being GM every existing division will be divided.Stellantis will keep building Challengers and Rams. Someday they may figure out that Jeep is the fugu fish of the automotive sushi world and unload to some Chinese. EV's? no, not really.If this site was The Truth About HVAC (TTAH) some on here would tell us that central heating and air causes unknown illnesses, will be bad, and cause a degradation of our nation's moral fiber. By golly they shoveled coal and carry ash buckets and that shouldn't change.
  • El scotto -channeling my inner Kenneth Mars- It is a coupe because Merzedes say's it est une kupe! Quiet schweinhunds! Dis is zee best kupe in zee vorld! Merzedes says so! Zee best or nothing Mein Herrs!