Ford Mustang SVO

{{Infobox automobile | name = Ford Mustang SVO | manufacturer = [[Ford Motor Company]] | production = 1984–1986 | body_style = 3-door [[liftback]] | platform = [[Ford Fox platform]] | layout = [[FR layout]] | assembly = [[Dearborn Assembly Plant]], [[Dearborn, Michigan]] | successor = [[Ford Mustang SVT Cobra]] | wheelbase = {{convert|100.5|in|mm|0|abbr=on}}<ref name=PS-8404/> | length = {{convert|181.0|in|mm|0|abbr=on}}<ref name=PS-8404/> | width = {{convert|69.1|in|mm|0|abbr=on}}<ref name=PS-8404/> | height = {{convert|51.9|in|mm|0|abbr=on}}<ref name=PS-8404/> | weight = {{cvt|2987|lb|kg|0}}<ref name=PS-8404/> | related = {{ubl |[[Ford Mustang (third generation)|Ford Mustang]] |[[Ford Fairmont]] |[[Mercury Capri#Second generation (1979–1986)|Mercury Capri]] |[[Ford Fairmont#Mercury Zephyr|Mercury Zephyr]] |[[Ford Durango]]}} | engine = 2.3L [[Ford Pinto engine#LL23|''Lima'']] [[Straight-4|I4]] [[Turbocharger|turbo]] | transmission = 5-speed [[BorgWarner T-5 transmission|T-5]] [[manual transmission|manual]] | image = 86 SVO (cropped).jpg | caption = 1986 Mustang SVO }}

The '''Mustang SVO''' is a limited-production version of the third generation [[Ford Mustang (third generation)|Ford Mustang]] sold from 1984 to 1986, with fewer than 10,000 built. SVO is an acronym referring to [[Special Vehicle Operations]], Ford Motor Company's racing division formed in 1980 to oversee all motorsports operations, distribute performance parts developed in racing programs, and develop high-performance production vehicles derived from motorsports technologies.<ref>{{cite web | url=https://www.caranddriver.com/reviews/a15142190/archived-1984-ford-mustang-svo-review/ | title=Tested: 1984 Ford Mustang SVO Is a Driver's Pony Car | last=Ceppos | first=Rich | date=October 1983 | website=Car and Driver | publisher=Hearst Digital Media | access-date=2023-05-05 | quote=The first car from Ford's new Special Vehicle Operations group, the turbocharged Mustang SVO portends good things for Blue Oval enthusiasts.}}</ref> Although it departed both physically and mechanically from any prior version of the Mustang, it held the same spot within the lineup, both in terms of performance over "lesser" variants and in prestige, as had variants such as the [[Carroll Shelby International|Shelby]]-tuned and "BOSS" Mustangs of the 1960s and 1970s.{{Citation needed|date=May 2020}}

==History== {{multiple image |align=left |direction=vertical |title=1986 Mustang SVO |image1=My SVO.JPG |caption1=Rear view |image2=1986 Mustang SVO Interior.jpg |caption2=Interior }} The [[National Traffic and Motor Vehicle Safety Act]] of 1966, establishing the [[National Highway Traffic Safety Administration|NHTSA]] and federal motor vehicle safety standards; [[National Environmental Policy Act]] of 1969, which paved the way for the [[United States Environmental Protection Agency|EPA]] and emissions controls; and the [[1973 oil crisis|1973]] and [[1979 oil crisis|1979 oil crises]] all dealt significant blows to demand for American [[muscle car]]s, which became nearly extinct due to rising fuel and insurance costs and more strict safety and emissions controls imposed worldwide. As a result, the "big three" automakers (Ford, [[General Motors]], and [[Chrysler Corporation]]), for whom muscle cars had been a steady and reliable source of income, began to suffer financially. Many of the vehicles of the muscle car era had been either completely discontinued or had been detuned to help keep them in compliance with new federal emissions regulations and the rising demand for better fuel economy. In 1970, [[Henry Ford II]] withdrew all manufacturer support for racing programs.<ref name=Leffingwell/>{{rp|288}} During the 1970s, although the [[Ford Mustang (second generation)|Mustang continued in production]], its performance and image had suffered greatly;{{Citation needed|date=May 2020}} diminished power output and Ford's inability to come up with an attractive body style in the post-fastback era were major issues.

Ford began to make a major push forward with the newly introduced [[Ford Fox platform|Fox platform]] Mustang in 1979; by 1982, Ford had nearly completely reinvented every aspect of the vehicle, which included putting a new emphasis on the model's sporty nature.<ref name=Leffingwell/>{{rp|280}} Just prior to this, in late 1979, Ford decided to form a division that could oversee both the company's racing program and the production of limited-edition, high-performance, street-legal vehicles based on or taking technology from the race vehicles. Officially, the division was called the '''Special Vehicle Operations''', but the public came to know them as simply [[Special Vehicle Operations|SVO]] (S-V-O). SVO was led by [[Michael Kranefuss]], who had previously headed the racing arm of [[Ford of Europe]] as director of motorsports, starting from 1972.<ref name=Leffingwell/>{{rp|287–288}} SVO was expected to develop a limited-production passenger car, ostensibly to transfer the team's racing success to the streets, but ultimately also to help fund its operations with added revenue.<ref name=Leffingwell/>{{rp|290}}

Tasked with developing something that was both plainly American and competent enough to compete with entry-level [[Europe]]an sports cars of the day, the team began tuning the Mustang, deeming it the most obvious basis for a high-performance vehicle. The engineering team working on the new Mustang SVO was led by Glen Lyall; Bob Negstad handled chassis development.<ref name=Leffingwell/>{{rp|290}} Ford President [[Donald Petersen]] called it "our most definitive effort on the American scene to put together the finest we have in the way of a smaller-displacement, higher-revving turbocharged kind of touring car".<ref name=CD-1983/>

At the same time, Ford had been working with [[Mazda]] to develop a proposed replacement for the Mustang, making plans to discontinue the Fox platform-based Mustangs, but enthusiasts protested and the joint Ford/Mazda sporty car was introduced eventually as the [[Ford Probe]] instead in 1988.<ref name=Leffingwell>{{cite book |url=https://archive.org/details/mustangfortyyear0000leff |title=Mustang: forty years |author1=Leffingwell, Randy |author2=Newhardt, David |date=2005 |publisher=Barnes & Noble Books |location=New York |isbn=0-7607-7288-6 |access-date=11 October 2022 |url-access=registration |chapter=13 {{!}} SVO: Some Variation Observed |pages=284–308 |chapter-url=https://archive.org/details/mustangfortyyear0000leff/page/284/mode/2up}}</ref>{{rp|287}} Initial schedules had called for the SVO Special Mustang to be introduced as a 1982½ model, but the confusion that resulted from the (temporary) cancellation of Fox platform Mustangs delayed the introduction of the Mustang SVO<ref name=Leffingwell/>{{rp|292}} to a 1983 press event in [[northern California]]'s [[Napa County, California|Napa]] and [[Sonoma County, California|Sonoma counties]]. That event included track time at the [[Sears Point Raceway]].<ref name=CD-1983/> With Ford continuing to make year-to-year decisions about the discontinuation of the Fox platform Mustang, the SVO was seen as both a potential celebratory edition and a bridge to future turbocharged performance vehicles.<ref name=Ford84/> List price for the 1984½ Mustang SVO was {{USD|15585|1984|round=-3}} when it hit dealerships in mid-April 1984,<ref name=Leffingwell/>{{rp|299;301}} more than double the price of a base Mustang. The Mustang GT was US$6,000 cheaper.<ref name=PM-8406/>

By 1986, Ford again was considering dropping the Fox platform Mustang in favor of the Probe, so SVO shifted their attention to Project GN34 and what would become the [[Ford Thunderbird (ninth generation)|1987 Ford Thunderbird Turbo Coupe]] (nicknamed the "Aerobird").<ref name=Leffingwell/>{{rp|302}}<ref>{{cite magazine |url=https://books.google.com/books?id=Frbtc4mssNQC&pg=PA20 |title=Automotive Newsfront |author=McCosh, Dan |date=August 1986 |magazine=Popular Science |pages=14;20 |volume=229 |issue=2 |publisher=Times Mirror Magazines |location=New York City |issn=0161-7370 |access-date=12 October 2022}}</ref> Total Mustang SVO production was 9,844,<ref name=Leffingwell/>{{rp|306}} with most sold the first year: 4,508 (1984), 1,954 (1985), and 3,382 (1986).<ref name=Leffingwell/>{{rp|302}}

==Specifications== ===Turbocharged engine=== [[File:86 SVO engine bay.jpg|thumb|right|2.3L turbocharged ''Lima'' I4; intercooler with sealing flange prominent at top left]] Despite what many think, the selection of a small displacement turbocharged and intercooled powerplant had nothing to do with fuel consumption and emissions.{{Citation needed|date=July 2024}} SVO engineers opted to forgo the production [[Ford small block engine#302|5.0 liter ''Windsor'' V-8]] fitted in the Mustang GT in favor of a detuned version of the turbocharged [[Ford Pinto engine#LL23|2.3 liter ''Lima'']] [[Straight-4|inline four]] racing engine used in the IMSA Mustang GTP. The base engines were originally used in the [[Ford Pinto|Pinto]] and [[Ford Mustang II]]. The four-cylinder engine was chosen over the V8 because SVO wanted a high tech solution and, in order to get the handling dynamic right, they had to transform the weight distribution of the platform. The engine was installed longitudinally and positioned further back than the V8 variant. Fitted with a Garrett [[AiResearch]] T03 turbo,<ref name=PS-8310/> Ford's new state-of-the-art EEC-IV controlled fuel injection system, it also broke new ground with first air-to-air [[intercooler]] used domestically. At an unheard of (at the time) 14 psi boost, it developed {{cvt|175|hp}} at 4400 rpm and torque of {{cvt|210|lbft}} at 3000 rpm.<ref name=CD-1983>{{cite news |url=https://www.caranddriver.com/reviews/a15142190/archived-1984-ford-mustang-svo-review/ |title=Tested: 1984 Ford Mustang SVO Is a Driver's Pony Car |author=Ceppos, Rich |date=October 1983 |work=Car and Driver |access-date=11 October 2022}}</ref> The larger High Output 5.0L V8 in the Mustang GT/Capri RS was also rated at 175 at 4200, but had more torque at {{cvt|245|lbft}} at 2400 in 1984.<ref name=PM-8310/> Compared with the V8, the 2.3L SVO engine was {{cvt|150|lb}} lighter.<ref name=Leffingwell/>{{rp|290}} In 1985, 5.0 H.O. horsepower increased to 210 while horsepower for Mustang SVO remained at 175. Horsepower increased to 200 (some sources indicate 205) for the 1985½ edition, which saw many vital improvements. It was essentially the car SVO wanted to build from the outset. 1986 was mostly carryover for the SVO, while the 1986 5.0 also made 200 horsepower after transitioning from Holley carburation to electronic fuel injection.

In addition, a "fuel grade" switch was added to the dash, allowing the driver to adjust the vehicle's spark advance depending on whether premium or standard grade fuel was being used;<ref name=PM-8310-2>{{cite magazine |url=https://books.google.com/books?id=h9QDAAAAMBAJ&pg=PA118 |title=Ford refines turbos |date=October 1983 |magazine=Popular Mechanics |pages=118;155 |volume=160 |number=4 |publisher=The Hearst Corporation |location=New York City |issn=0032-4558 |access-date=12 October 2022}}</ref> the computer-controlled system limited boost pressure to {{cvt|10|psi}} below 2,500 RPM,<ref name=Leffingwell/>{{rp|295}} rising to {{cvt|14|psi}} at faster engine speeds<ref name=Ford84>{{cite web |url=https://performance.ford.com/enthusiasts/collector-vehicles/mustang/svo/1984.html |title=1984 Mustang SVO |website=Ford Performance |access-date=11 October 2022}}</ref> with premium fuel.<ref name=Hemmings>{{cite news |url=https://www.hemmings.com/stories/article/mustang-svo |title=Mustang SVO: The Euro-inspired corner carver that was ahead of its time |author=Ernst, Kurt |date=April 9, 2020 |work=Hemmings |access-date=11 October 2022}}</ref> A factory-installed [[Hurst Performance|Hurst]] shifter was made standard to improve feel and quickness.

With fine tuning and the addition of a new water-cooling system, power output rose to 200 or {{convert|205|hp|kW|0}} for the 439 1985½ SVOs (there is some ambiguity), dropping back to {{convert|200|hp|kW|0}} for 1986.<ref name=Leffingwell/>{{rp|302}} The vehicle's standard [[Borg-Warner]] [[BorgWarner T-5 transmission|T-5]] five-speed [[manual transmission]] was updated in 1985, receiving revised gearing to match the new 3:73 rear end ratio. {{clear}} {| class="wikitable" |- !colspan="8"| Mustang SVO horsepower and torque ratings by year |- ! Year ! Power ! Torque |- | 1984 | {{convert|175|hp|kW|0|abbr=on}} @ 4400 rpm | {{convert|210|lbft|0|abbr=on}} @ 3000 rpm |- | 1985 | {{convert|175|hp|kW|0|abbr=on}} @ 4400 rpm | {{convert|210|lbft|0|abbr=on}} @ 3000 rpm |- | 1985½ | {{convert|205|hp|kW|0|abbr=on}} @ 5000 rpm | {{convert|248|lbft|Nm|abbr=on}} @ 3200 rpm |- | 1986 | {{convert|200|hp|kW|0|abbr=on}} @ 5000 rpm | {{convert|240|lbft|0|abbr=on}} @ 3200 rpm |}

===Other upgrades=== [[File:SvoPerformance.jpg|thumb|1985½ training article]] In addition to the advanced engine, the SVO featured several key modifications over the standard Mustang to help increase performance. The front suspension geometry was modified, 15:1 ratio power-assisted rack-and-pinion steering system replaced the standard system, a [[limited slip differential|limited-slip]], 3.45:1, 7.5" Traction-Lok rear axle was added for the first year of production (later models used a 3.73:1 ratio, 7.5" axle), a new, ventilated four-wheel-disc braking system (sourced from Fox platform cousin [[Lincoln Continental Mark VII|Continental Mark VII]])<ref name=Leffingwell/>{{rp|295}} replaced the GT's disc/drum setup (a first for the Mustang), specially designed pedals were used to aid [[heel-and-toe shifting]]<ref name=Leffingwell/>{{rp|300}} and a six-shock [[KONI Group|KONI]] suspension system featuring specially tuned adjustable front struts, rear shocks, and horizontal rear dampers replaced the setup used on the Mustang GT.<ref name=Leffingwell/>{{rp|294}} The KONI shocks had settings for "cross country" (front and rear), "GT" (front only), and "competition" (front and rear);<ref name=PM-8310/> the lateral rear shocks served to eliminate [[axle hop]].<ref name=PM-8406>{{cite magazine |url=https://books.google.com/books?id=HeMDAAAAMBAJ&pg=PA152 |title=Ford Mustang SVO revisited |author=Hoyt, Wade |date=June 1984 |pages=152;154 |magazine=Popular Mechanics |volume=161 |number=6 |publisher=The Hearst Corporation |location=New York City |issn=0032-4558 |access-date=12 October 2022}}</ref> Five-lug, 16 × 7-inch aluminum wheels with P225-50R16 tires were standard, as well; originally the SVO was fitted with German Goodyear NCT tires,<ref name=CD-1983/> which were changed later to Goodyear Eagle "Gatorback" tires; Chevrolet had signed an agreement with Goodyear for the Gatorback to be fitted exclusively in 1984 to the [[Chevrolet Corvette (C4)|Corvette (C4)]],<ref name=Leffingwell/>{{rp|291}} a competitor whose handling and performance was attributed to the tires.<ref name=PM-8401/>

The ventilated rear disc brakes, the five-lug hubs, the 16-inch (406 mm) wheels, the quad-shock rear end (early 84 units used a solid steel traction bar with a rubber cover), and the KONIs were used on the SVO before any other Mustang. Negstad tightened the shock valving in 1985 and again in 1986, noting "people assumed you were supposed to pay a little punishment for this love affair of driving this car. It can't be that comfortable!"<ref name=Leffingwell/>{{rp|302}}

===Styling=== Interior was only available in charcoal grey (leather or cloth) and standard features included adjustable sport seats with lumbar supports and a leather-wrapped tilt steering wheel, shift lever, and emergency brake handle, which were not normally found on small [[United States|American]] coupes. Just six major options were available: air conditioning, a [[cassette tape]] player, power door locks and windows, a flip-up [[sun roof]], and leather seat trim.<ref name=PM-8310/> However, an optional Competition Prep package (option code 41C) deleted many of those features to save approximately {{cvt|100|lb}} from the curb weight; only 123 such examples were built (40 in 1985 and 83 in 1986).<ref name=Leffingwell/>{{rp|303;306}} The [[speedometer]] carried labels for speeds up to {{cvt|85|mph}}, but had unlabeled rulings out to {{cvt|140|mph}} to comply with federal regulations.<ref name=CD-1983/><ref>{{cite news |url=https://jalopnik.com/the-ford-mustang-svo-had-a-hilarious-but-possibly-illeg-1847033278 |title=The Ford Mustang SVO Had A Hilarious But Possibly Illegal Speedometer |author=Torchinsky, Jason |date=June 4, 2021 |work=Jalopnik |access-date=11 October 2022}}</ref>

[[File:'83-'86 Ford Mustang Hatchback (Orange Julep).JPG|thumb|right|1984/85 Mustang SVO with sealed-beam headlamps]] The exterior had a unique front grille and hood that was only used on the SVO line; the front end was designed to accept both [[sealed beam]] headlamps and forthcoming composite headlamps. However, the NHTSA was late in approving the composite headlamps with replaceable 9004 bulbs in the summer of 1983, a few months after the April 1983 introduction of 1984 Mustang SVO. The Mustang SVO was fitted with sealed beam headlamp capsules for 1984 model year. For 1985½ and 1986 models, the composite headlamps replaced the sealed beam headlamp capsules, improving the appearance.<ref name=Leffingwell/>{{rp|301}} The hood had a functional scoop for the [[intercooler]].<ref name=Leffingwell/>{{rp|300–301}}

In addition, the Mustang SVO had thinner side moldings, smoother sail panels behind the rear quarter windows, small rear wheel spats, and a biplane spoiler that was also unique to the SVO.<ref name=Leffingwell/>{{rp|301}} The [[coefficient of drag]] was 0.39,<ref name=CD-1983/> dropping slightly to 0.38 (0.37 per Ford) with the new composite headlamps fitted to the 1985½<ref name=Leffingwell/>{{rp|302}} The pinstriped taillights introduced on the SVO were later reused on the [[Ford Mustang SVT Cobra#1993|1993 Cobra model]], as well.<ref name=Ford84/> Only four colors were available for 1984: black, silver (metallic), red ("Medium Canyon Red"), and dark grey ("Dark Charcoal Metallic").<ref name=Ford84/>

==Performance and reception== With the standard 3.45:1 rear axle, acceleration of the 1984½ SVO was {{cvt|0|–|60|mph}} in 7.5 seconds, covering the quarter mile in 15.5 seconds with a trap speed of {{cvt|90|mph}}.<ref name=Leffingwell/>{{rp|299}} An example tested by ''[[Popular Science]]'' accelerated to {{cvt|60|mph}} in 11.2 seconds, carrying the driver, a passenger, and approximately {{cvt|30|lb}} of test equipment.<ref name=PS-8404>{{cite magazine |url=https://books.google.com/books?id=sQAAAAAAMBAJ&pg=PA22 |title=Turbo 4s vs. a hot V8 |author1=Dunne, Jim |author2=Keebler, Jack |author3=Sharko, Greg |date=April 1984 |magazine=Popular Science |volume=224 |issue=4 |pages=22–30 |publisher=Times Mirror Magazines |location=Los Angeles |issn=0161-7370 |access-date=12 October 2022}}</ref> As tested by ''[[Popular Mechanics]]'' (PM), the quarter-mile performance was 15.8 seconds at {{cvt|90.1|mph}}.<ref name=PM-8401/> That performance improved to 15.0 seconds at {{cvt|94|mph}} in 1985 with the 3.73:1 axle.<ref name=Hemmings/> Observed fuel economy during a 10-way comparison test at [[Lime Rock Park]] was {{cvt|11.2|mpgUS}}, compared to an advertised {{cvt|17|mpgUS}} under the EPA City driving cycle.<ref name=PM-8401/> The EPA highway estimate was {{cvt|32|mpgUS}}.<ref name=PS-8310>{{cite magazine |url=https://books.google.com/books?id=PETCVTz_lwUC&pg=PA127 |title=SVO Mustang — the sophisticated muscle car |author=Dunne, Jim |date=October 1983 |magazine=Popular Science |volume=223 |issue=4 |page=127 |publisher=Times Mirror Magazines |location=New York City |access-date=12 October 2022}}</ref>

According to Daniel Charles Ross of PM, "The total effect of the SVO reworking of the Mustang is a successful one, in looks and equipment. ... The vehicle's race car-like handling characteristics allow very little roll in hard cornering ... It's definitely a nice piece of work."<ref name=PM-8310>{{cite magazine |url=https://books.google.com/books?id=h9QDAAAAMBAJ&pg=PA108 |title=Detroit '84: FoMoCo is packaging get-up-and-go! |author=Ross, Daniel Charles |date=October 1983 |magazine=Popular Mechanics |pages=108–109;164 |volume=160 |number=4 |publisher=The Hearst Corporation |location=New York City |issn=0032-4558 |access-date=12 October 2022}}</ref> In a follow-up comparison report for ''PM'', the magazine called it "a kind of modern-day [[Shelby Mustang#1965–1966 Shelby GT350|Shelby Mustang GT-350]]" but compared to the Mustang GT V8 that was included in the comparison, the SVO "delivers acceleration identical to the V8, 20 percent worse fuel economy and absolutely no low-speed torque" and concluded it was "unsuitable and dangerous on the street because the turbo power comes on so suddenly".<ref name=PM-8401>{{cite magazine |url=https://books.google.com/books?id=0uMDAAAAMBAJ&pg=PA88 |title=Corvette takes on the world |author1=Taylor, Rich |author2=Stahl, Bill |date=January 1984 |magazine=Popular Mechanics |pages=88–91;122;126–128 |volume=161 |number=1 |publisher=The Hearst Corporation |location=New York City |issn=0032-4558 |access-date=12 October 2022}}</ref> The car that Ford had supplied for the comparison had shaved tire treads to enhance performance, so ''PM'' tested another example later, writing "the ride is really excellent for a sports car ... with 30 hp less than the Mustang GT V8, and much less weight in the nose, the SVO handles a lot better, too"; although there were several nuisances related to seating position and controls, ''PM'' concluded the Mustang SVO was "a commitment to high performance after so long a drought in Detroit. Not the irresponsible high performance of the muscle car era, but performance with fuel economy, brakes and handling."<ref name=PM-8406/> When tested by Road & Track, they noted: "The appeal of the car is in its balance, which transcends even the outstanding individual characteristics." and "This may be the best all-around car for the enthusiast driver ever produced by the U.S. industry." Autoweek concluded their assessment with: "All we can say after driving both [the BMW 320i and the Mustang SVO] is, 'No contest.' and 'Congratulations, SVO'." Motor Trend said "Bold in concept and intelligent in execution." Car and Driver said "When you strap it on, it feels right." and "This is an important vehicle, a harbinger of things to come."

==References== {{reflist}}

==External links== {{Commonscat-inline|Ford Mustang SVO}} *Standard Catalog of Ford 1903 2003 3rd Edition by John Gunnell *[http://www.facebook.com/groups/MustangSVO Mustang SVO on Facebook] *[http://www.svoca.com SVO Club of America] *[http://www.svoregistry.com SVO Registry] *[http://www.svocop.com SVO Club of Pat] *[http://www.drivingenthusiast.net/sec-ford/special-report-svo/svo-at-nl/page-1.htm Ford Develops the Mustang SVO at Nelson Ledges]

{{DEFAULTSORT:Ford Mustang Svo}} [[Category:Ford Mustang|SVO]]