Editing Porsche 914 (section)

== Concept cars, prototypes, and factory specials ==
===Porsche 914/6 GT, 914/6 R===
{{Main|Porsche 914-6 GT}}
[[File:Porsche 914 6 GT 1970 (Volante) jm20580.jpg|thumb|[[Porsche 914-6 GT|Porsche 914/6 GT]]]]
On 1 March 1970 the 914/6 was homologated by the [[Fédération Internationale de l'Automobile]] (FIA) for Group 4, Special Grand Touring cars.<ref name="ludvigsenbook"/>{{rp|583–588}} That same month two cars were sent to the Targa Florio for testing, not as competitors. These were the first two 914/6 GT cars built. Externally the cars were distinguished by squared fender flares that were the full {{cvt|2|in|mm|0}} depth permitted by FIA rules. The chassis was reinforced with three welded plates on each side. For rally applications a stone guard protected the power-train and a stone shield did the same for the front of the car.

The GT cars received stronger lower front A-arms, and anti-roll bars were fitted front and rear. Ground clearance was reduced to {{cvt|4|in|mm|0}}. Brakes front and rear were upgraded to the same components used on the racing 911S model.

Fiberglass panels for the front and rear bumpers, front and rear deck lids, and left and right rocker panels replaced the original steel parts. The rear air intake grille was doubled in size. An inlet in the front bumper admitted air to a new supplementary oil cooler in the nose. The car's nose compartment was nearly filled by a {{cvt|100|L|usgal|1}} fuel tank. The car weighed {{cvt|1980|lb|kg|1}} ready to race.
[[File:Paris - RM Sotheby’s 2018 - Porsche 914-6 GT - 1970 - 003.jpg|thumb|Porsche 914/6 GT rear view]]
The engine remained at 2.0&nbsp;litres displacement with [[Weber Carburetors|Weber Carburetor]] induction, but was extensively upgraded otherwise. New cylinder heads with larger valves topped aluminum cylinder barrels with chrome-plated bores. A dual-ignition system fired two spark plugs per cylinder. High compression pistons and forged steel piston rods were borrowed from the 911S. A special crankshaft was added. Camshafts and rocker arms came from the 901/20 in the Carrera 6. Power output was up to {{cvt|210|PS|kW hp|1}} at 8000 rpm.

Although the factory campaigned the car in rallying, it was more successful in road racing.

In the United States the Porsche+Audi distributor called the car the 914/6R.<ref name="adlerbook"/>{{rp|228–230}}

====M471, kits====
To qualify for SCCA homologation, 500 copies of a car had to be built. It is estimated that Porsche built fewer than 40 GTs with the full race engine.<ref name="excellence-strenger"/> To add to the total, an additional 11 cars were equipped with the Competition Option Group M471 package that included the GT's steel fender flares, rocker panels and nose piece as well as wheel spacers, a set of 6-inch wide Fuchs wheels, and 185/70VR15 tires, but did not include the enhanced engine from the GT. Similar appearance-only kits were also supplied to dealers, totaling about 400 units.

Porsche's application for homologation was successful, but instead of being added to the C Production class, the SCCA put the 914/6 GT into the more competitive B Production class.

===914/8===
[[File:Porsche 914-8 in the Porsche-Museum (2009) IMG 2733.jpg|thumb|Porsche 914/8]]
Two prototype 914s, dubbed ''914/8'' generally and called ''914/S'' by Porsche, were built during 1969.<ref name="porsche-50years"/>{{#tag:ref| A four-cylinder car called the 914S was offered in the United States for a short time. It was withdrawn at the request of the factory.<ref name="mt-1973"/>|group=lower-alpha}} An orange 914/8 was the first constructed, at the instigation of [[Ferdinand Piëch]] (then head of the racing department), to prove the concept. Powered by a {{cvt|350|hp|kW PS|0}} Type 908 [[Flat-eight engine|flat-eight]] racing engine, it was built using a surplus handbuilt 914 development prototype bodyshell, chassis No. 914111, and included many differences from the standard vehicle, such as quad headlamps.<ref name="long914book"/>{{rp|161, 162}} The second 914/8, a silver, road-registered car powered by a carburetted and detuned 908 race engine making {{cvt|300|hp|kW PS|0}}, was prepared as a gift to [[Ferry Porsche]] on his 60th birthday. Also based on a spare prototype shell (chassis No. 914006), it was much closer to the standard car in detail. By all accounts Ferry didn't like the car very much and it is now in the Porsche Museum. Neither car saw a racetrack except for the purposes of testing. The 914/8 was not considered for production as a regular model.

===Porsche Tapiro===
{{Main|Porsche Tapiro}}
The Porsche Tapiro was a concept car designed by [[Giorgetto Giugiaro]]'s [[Italdesign Giugiaro|Italdesign]] studio and built on a 914/6 platform.<ref name="italdesigntapiro"/> The car had [[gullwing doors]] and two centrally-hinged covers over the rear engine and storage compartments. The Tapiro debuted at the [[Turin Auto Show#1970|1970 Turin Auto Show]]. Sold to Argentine composer [[Waldo de los Ríos]], the car was extensively damaged in a fire.<ref name="motor1tapiro"/> It was later bought by Italdesign.

===Goertz/Eurostyle 914/6R===
This car was a custom-bodied 914/6R that was first shown at the [[Turin Auto Show#1970|1970 Turin Auto Show]]. The design was done by Count [[Albrecht von Goertz]], and was built by the Turinese carrozzeria Eurostyle.<ref name="long914book"/>{{rp|162–168}} Goertz, who had also done the design for the [[BMW 507]] roadster, produced a body with a tapered nose and a roofline that extended straight back, ending with sloping sail panels that gave the car the appearance of a [[shooting-brake]].<ref name="cdw-914-6r"/>

===Gerber/Sbarro rotary 914===
In 1970 Swiss Industrialist Dr. Alfred Gerber contracted compatriot car designer Franco Sbarro to build a customized 914.<ref name="ludvigsenbook"/>{{rp|592}} Sbarro installed the 2-rotor Wankel engine and semi-automatic transaxle from Gerber's NSU Ro80 in the mid-engined Porsche. The transaxle's inboard disc brakes were retained, and special halfshafts and shift-linkage were fabricated. A radiator was installed in the nose of the car, with fans sourced from a Renault R16. The engine produced {{cvt|115|hp|kW|1}}, and in the 914 returned {{cvt|21|mpgus|L/100km|1}} while allowing the car to reach a top speed of {{cvt|190|kph|mph|1}}.<ref name="rotary-914"/>

===Heuliez Murène===
[[File:Porsche 914 Murene at Quail 2023.jpg|alt=Porsche 914/6 Murène by Heuliez|thumb|Porsche 914/6 Murène by Heuliez]]
In 1969 designer Jacques Cooper drew an interpretation of the 914 that he presented to his employer, Brissonneau and Lotz.<ref name="hemmings-murene" /> The French company, a supplier of auto bodies and railcars, approved the project and obtained one of the first 914/6 models built, chassis 1300005, to serve as a basis for the redesigned car. Shortly after this Brissonneau encountered financial difficulties. Cooper, hoping to get the car into production, arranged, with Brissonneau's approval, for the [[Heuliez|Heuliez company]] to take on responsibility for development. A running prototype was completed in just two and one half months. The car was displayed at the 1970 [[Paris Auto Show]] on the Heuliez stand as the Heuliez Murène. It did not reach production. Heuliez bought the Murène from Brissonneau in 1971 for ₣24,250.<ref name="artcuriel" /> In 2012 the car was sold at auction for €42,889.

===Hispano Alemán Vizcaya===
Businessman Werner Bernhard Heiderich was the importer of Porsche for Spain. He established a company named [[Hispano Aleman|Hispano Alemán]] to build and sell customized cars.<ref name="banovsky"/> Heiderich contracted with [[Pietro Frua]] to produce a new body on a Porsche 914 platform.<ref name="frua1"/> The car, named the Vizcaya, was first shown at the [[Geneva Motor Show#1971|1971 Geneva Motor Show]]. Swiss authorities seized the car owing to a dispute over it between Heiderich and Frua. Heiderich eventually prevailed, and the car next appeared at the 1972 [[Automobile Barcelona|Barcelona Motor Show]]. The Vizcaya did not go into production.

=== Porsche 916 ===
[[File:Porsche 916 vl TCE.jpg|thumb|Porsche 916]]
Planned for the 1972 model year, the Porsche 916 program was cancelled after eleven prototypes were built. The car came with aerodynamic front and rear bumpers and either the 2.4&nbsp;L engine from the 911S, or the 2.7&nbsp;L from the [[Porsche 911#911 Carrera RS (1973 and 1974)|Carrera]]. It was also to have a fixed steel roof, wider wheels, double grilled engine lid, and flared fenders as styled from the [[Porsche 914-6 GT|914-6 GT]] cars.<ref name="porscheclub-914"/> Ventilated disc brakes were fitted to all four wheels. The 916 also used a "mid-engined" version of the then-new 915 transmission, giving a conventional shift pattern with one to four in an H and fifth out on a limb. One 916 was built to US specs and on delivery to the US was fitted with air conditioning by the dealer (Brumos) and has been housed at the Automobile Atlanta 914 museum since 1990.

===Nordstadt Carrera Käfer (Nordstadt Carrera Beetle)===
Günter Artz was director of the Hannover Volkswagen dealer Autohaus Nordstadt. In 1973 Artz and Nordstadt unveiled a custom car called the Carrera Käfer that mounted a modified [[Volkswagen Beetle]] 1303 body on a Porsche 914/6 chassis. The engine was upgraded to a {{cvt|2.7|L|cuin|0}} flat-six from a Porsche 911 Carrera that produced {{cvt|210|PS|kW hp|1}}.<ref name="ams-kafer"/>

===GM XP-897GT===
First shown in 1973, [[General Motors]] (GM) built the Corvette XP-897GT concept car to showcase their rotary engine technology. Lacking a suitable mid-engined platform, GM bought a 914/6 and shortened the wheelbase by {{cvt|6.5|in|mm|0}}. The body was designed in-house by GM and built by [[Pininfarina]] in Italy. A GM two-rotor [[Wankel engine]] powered the car through a new transaxle. The engine displaced {{cvt|266|cuin|cc|0}} and produced {{cvt|180|hp|kW|1}}. When the rotary engine project was cancelled, GM stored the car at the Vauxhall Design Centre in England. The car was rescued from the crusher by an English enthusiast, who also managed to obtain an original GM rotary engine. The car was scheduled to appear at [[Amelia Island Concours d'Elegance|Amelia Island]] in 2019.<ref name="hemmings-xp897"/><ref name="gma-xp897"/>

=== 914 Limited Edition ===
[[File:Bumblebee 914LE.jpg|thumb|"Bumblebee" (black) 914 LE]]
In 1974, Porsche produced a series of Limited Edition cars for the North American market to commemorate Porsche's victories in the Can Am racing series. They were equipped with individual color schemes and came standard with otherwise optional equipment. The factory is said to have produced about 1,000 of these vehicles, about 50% Bumblebee and 50% Creamsicle. Variants of this series were manufactured and distributed in very limited numbers to European markets and Japan.{{Citation needed|date=August 2018}} Along with the regular Appearance Group option (fog lamps and center console with clock and additional gauges) at $300, the LE package set buyers back another $320. All Limited Editions models came with the 2.0&nbsp;L (1,971&nbsp;cc) flat four engine, which was otherwise optional in the standard 914, that produced 91&nbsp;hp in U.S. trim.<ref name="hemmings-le"/>

The Creamsicle: With a cream color exterior (paint code U2V9), these cars sported Phoenix red trim, including color matched lower valences and bumpers.<ref name="bat-le"/> This light [[ivory (color)|ivory]] color scheme concept carried over from the 1973 911 Carrera RS series.

The Bumblebee: Featuring a [[black]] exterior (paint code L041), these cars sported a Sunflower yellow trim (paint code L13K). Black body paint color was always an additional cost special option on standard 914 Porsche cars, but was included as a standard component on the black 914 LE cars. Like the Creamsicle All but one photo of the 914 Porsche Can Am prototype cars are Bumblebee cars. The black-based 914 LE color scheme is specific to the 914 LE cars and has no precedent with the Can Am race cars or the 1973 911 Carrera RS series cars. The majority of 914 Limited Editions seem to be Bumblebees.<ref name="bowlsby-le"/>

All 914 LE cars featured a specially designed front spoiler and negative side stripes. Additionally, all Limited Editions were equipped with front and rear anti-roll bars, dual horns, leather covered steering wheel, driving lights, painted rear [[roll cage|roll bar]] trim (as opposed to vinyl clad), [[Mahle GmbH|Mahle]] cast aluminum wheels and a center console with an oil temperature gauge, clock, and [[voltmeter]].<ref name="bonhams-bb"/>

===Other===
A factory prototype 914/6, (chassis no. 914114), surfaced in the US in 2001. Together with a surviving prototype Sportomatic 914/6 (chassis No. 914120), reputedly in Southern Germany, they are a special part of Porsche history.