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Porsche 908
1971-05-29 Vic Elford, Porsche 908-3 (Hatzenbach).jpg
Porsche 908/3 of 1971
Body and chassis
Class1966-71: Group 6 Prototype-Sports Car
1972-75: Group 5 Sports Car
1976-81: Group 6 Two-Seater Racing Car
Body styleCoupé
LayoutRMR layout
Engine3.0 I flat 8 (908/01, 02, 03)
2.1 l turbocharged flat 6 (908/03)
Length4,839 mm (190.5 in)
Curb weight650 kg (1,430 lb)
PredecessorPorsche 907
SuccessorPorsche 936

The Porsche 908 was a racing car from Porsche, introduced in 1968 to continue the Porsche 906/Porsche 910/Porsche 907 series of models designed under Ferdinand Piech.

As the FIA had announced rule changes for Group 6 Prototype-Sports Cars limiting engine displacement to 3000 cc, as in Formula One, Porsche designed the 908 as the first Porsche sports car to have an engine with the maximum size allowed. The previous Porsche 907 only had a 2200 cc Type 771/1 flat-8 engine developing 270 hp. The new 3-litre Type 908 flat-8 engine produced 257 kW (350 hp) at 8400 rpm. Being traditionally air-cooled and with only 2 valves per cylinder, it was still down on power compared to more modern F1 designs which delivered over 400 hp (300 kW), but were not suited to endurance racing.

The 908 originally was a closed coupe to provide low drag at fast tracks, but from 1969 on was mainly raced as the 908/2, a lighter open spyder. A more compact 908/3 was introduced in 1970 to complement the heavy Porsche 917 on twisty tracks that favored nimble cars, like Targa Florio and Nürburgring. Sold off to privateers for 1972, various 908s were entered until the early 1980s, often retro-fitted with Porsche 934-based 2.1-litre turbocharged flat 6 engines.

1968: 908/01

Despite winning the 1000km Nürburgring, the 908 was anything but convincing in 1968. The older and smaller 2200 cc 907 had started the season with dominating wins and later delivered better results than Porsche's first serious attempt in the prototype category. Meanwhile, the older 4.7-litre Ford GT40s Group 5 Sports Cars were winning races on the faster tracks, with the Ford P68 being a failure, Ferrari remaining absent, and the Alfa Romeo 33 still utilizing a 2000cc engine. With the minimum production requirement for the 5000cc Group 5 Sports Car category reduced from 50 units to 25 for 1969, Porsche decided to go one step further and build the required 25 examples of a new 12-cylinder car, the Porsche 917. This risky investment should take about a year, though, and the 908 was supposed to deliver results in the meantime.

The 1968 24 Hours of Le Mans were postponed from June to the end of September due to political unrest in France, setting the stage for a showdown between the 908s and the GT40s. The Porsche 908 LH Long Tails were the fastest in qualifying and the early stages of the race, but it showed that Porsche had not taken advantage of the additional time to improve the 908. Troubles with the alternator caused delays and even disqualifications as the new Porsche team leaders had misinterpreted the repair rules. Once again, a V8-powered Ford won, and a 907 Long Tail came in second in front of the sole surviving standard 908. In addition, Ford won the 1968 International Championship for Makes.

1969: 908/02

Herrmann's #64 Porsche 908 with long tail bodywork, runner up at Le Mans 1969, shown at the Nürburgring in 1981
Herrmann's #64 Porsche 908 with long tail bodywork, runner up at Le Mans 1969, shown at the Nürburgring in 1981
Porsche 908/02 of 1969
Porsche 908/02 of 1969

For 1969, the Group 6 prototype rules were changed, and Porsche lowered the weight of the Porsche 908/02 Spyder [1] by 100 kg (220 lb), removing the roof and the long tails. Aluminium tube frames were used, with air pressure gauges to check them.

The 1969 24 Hours of Daytona were a disaster for Porsche, as all three 908/02 failed, and a Lola T70 won. At the 12 Hours of Sebring, a Ford GT40 defeated a trio of factory-entered 908/2s.

At that time, the more powerful Porsche 917 was introduced in Geneva, and it seemed that the career of the 908 would be over. But with the larger car having arrived, the 908 started to succeed. The next race was the BOAC 500 at Brands Hatch, where the 908 was finally successful, finishing 1-2-3 ahead of a Ferrari 312P. With additional wins at the 1000km Monza, the Targa Florio, the 1000km Spa and an overwhelming 1-2-3-4-5 at the 1000 km Nürburgring, the 1969 International Championship for Makes was secured for Porsche by the 908/02, while the Porsche 917 suffered teething problems.

On the other hand, the prestigious 24 hours of Le Mans was again won by a Ford GT40 in 1969, as the 917s had gearbox troubles after leading for many hours. A 908 challenged for the win, as Hans Herrmann came in as a very close 2nd behind Jacky Ickx. Herrmann's 908 low drag coupé was fast on the straights, but near the race end the brake pads wore down, indicated by a light that was introduced with the 908s. The team gambled on not changing the pads, which allowed Ickx to pass under braking.

1970 - 1971: 908/03

Porsche 908/03 in 1970 (Hans Herrmann)
Porsche 908/03 in 1970 (Hans Herrmann)
Porsche 908/03 of 1971, with fins (Jo Siffert)
Porsche 908/03 of 1971, with fins (Jo Siffert)

Despite the more powerful 917 improving towards the end of 1969, the career of the 908 would continue. On rather twisty and slow tracks like Nürburgring and Targa Florio, the 917 was not suited well even after being modified to the "917K". So rather than trying to make "one size fit all", Porsche built dedicated cars for each type of racing track. Based upon the lightweight and short Porsche 909 which was used in hillclimbing, the new open cockpit version, the 908/03, was even shorter than the 908/02, and only weighed 500 kg (1,100 lb)- an astonishing figure for a long-distance racing car- in comparison, the 917K weighed about 840 kg (1,900 lb). This version was successful in the 1970 Nurburgring 1000 km and the Targa Florio, where typical speeds were only about half of the 240 mph (390 km/h) which the 917LH long tails could achieve at Le Mans[citation needed]. The 908/02 in which Steve McQueen finished second at the 1970 12 Hours of Sebring was also used as a camera car for the Le Mans (film) in the race itself. Steve McQueen originally intended to drive a Porsche 917 in the race, though this was vetoed by the studio funding the film[citation needed].

In 1971, vertical fins were added to the rear of the 908s which were outpaced at the Targa by two Alfa Romeo Tipo 33s. All entered 908s crashed (2 on the first lap; Brian Redman was badly injured after crashing 20 miles into his first lap), but Vic Elford had managed to set fastest lap. The next race at the Nurburgring saw a 1-2-3 finish for the 908 in front of two Alfas, but with Alfa scoring wins at Brands Hatch and Watkins Glen, it was proven that these prototypes could even beat the 917s.

With the combination of the powerful 917 and the lightweight 908, Porsche dominated the International Championship for Makes each year from 1969 through to 1971.

1972 - 1981

Porsche 908/03, privately entered in 1973
Porsche 908/03, privately entered in 1973
Porsche 908.3 turbo of 1980, with airbox for the intercooler
Porsche 908.3 turbo of 1980, with airbox for the intercooler

For 1972, the 5000 cc Group 5 Sports Car category was discontinued, and the 917 and its main rival, the Ferrari 512, became obsolete. In the 3000cc category, now renamed Group 5 Sports Cars, Porsche's main advantage was their low weight, as the engine was underpowered with 370 hp (280 kW). The new rules required a much higher weight (650 kg (1,430 lb)) than Porsche could achieve (well under 600 kg (1,300 lb)), giving the advantage to Ferrari 312PB, Alfa Romeo T33TT and Matra with their more powerful F1-derived engines that had 420 hp (310 kW) or more even in endurance trim.

Porsche decided to end its 20-year history of factory sports car racing and sold the 908/03 cars to customers. Besides developing the 917/10 turbo for the Can Am series, the Zuffenhausen-based company focused on the development of the already aging Porsche 911, testing the 911 flat-6 with turbochargers. Yet a 3 year old Porsche 908LH Coupé was entered by Reinhold Joest in the 1972 24 Hours of Le Mans, finishing a strong 3rd. Customers continued to race several 908/3, fitted with extra weight as required by the rules. In 1975, some 908s were fitted with turbocharged engines, similar to those used in the Porsche 934 GT car. Even with 2.1-litre and a turbo factor of 1.4, the turbos by now outpowered normally aspirated 3-litre engines. Taking advantage of that, in 1976 the factory developed the Porsche 936 to compete in the new Group 6 Two-Seater Racing Car category that replaced the Group 5 Sports Car class. Unlike the 934 and 935, Porsche did not offer the 936 for sale, entering it in a few races only, mostly at Le Mans. Several customer-908s were upgraded with 936-style bodywork. The Porsche 908/80 Turbo of Joest and Jacky Ickx which finished 2nd in the 1980 24 Hours of Le Mans turned out later to have a real Porsche 936 chassis, though.

The 908 has won the 1000km Nürburgring in three different decades, winning four years in a row from 1968 to 1971 and again in 1980, utilizing turbocharging for its final victory. 908s are still raced today in competitions such as the Classic Endurance Racing (CER) series.


908 LH Coupé '68

  • 2990 cc 8-cyl engine
  • 350 hp (260 kW)
  • top speed: 320 km/h (200 mph)
  • closed cockpit
  • long tail bodywork for fast tracks

908/2 Spyder '69

  • 2990 cc 8-cyl engine
  • 350 hp (260 kW)
  • top speed: 290 km/h (180 mph)
  • open cockpit
  • low weight (no minimum weight given by rules)
  • long tail bodywork for fast tracks

908/3 Spyder '70/'71

  • 2990 cc 8-cyl engine
  • 370 hp (280 kW)
  • top speed: 290 km/h (180 mph)
  • open cockpit
  • shorter wheelbase
  • lower weight
  • new bodywork, also with rear fins in '71

908/3 Spyder Turbo '75 - '81

  • '71 factory cars sold to customer teams
  • modified by teams and in factory
  • 2140 cc 6-cyl turbo engines
  • 500+ hp


  1. ^ "Porsche 908/02 Spyder Pictures". DieselStation. Retrieved 30 July 2010.

External links

This page was last edited on 16 July 2019, at 19:45
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