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1984 Porsche 956B

In 1984 Porsche offered a full works-specification car known as the 956B. This provided the New-Man Joest Racing team with a winning formula and they dominated the 1985 24 Hours of Le Mans with a resounding victory.

One of the main differences between the customer 956 and the 956B was the Bosch Motronic engine management. This allowed more precise ignition and injection which in turn provided better economy and more power.

Story by Richard Michael Owen

In Detail

submitted by Richard Owen
type Racing Car
built at Germany
production 4
engine Water Cooled Flat-6
position Mid Longitudinal
aspiration Twin KKK K26-3060G Turbos w/Hybrid Water & Air Intercoolers
valvetrain 4 Valves / Cyl
fuel feed Bosch-Kugelfischer Mechanical Injection
displacement 2649 cc / 161.7 in³
bore 92 mm / 3.62 in
stroke 66 mm / 2.6 in
compression 7.5:1
electronic system Bosch Motronic
power 462.3 kw / 620 bhp @ 8200 rpm
specific output 234.05 bhp per litre
bhp/weight 756.1 bhp per tonne
torque 599.27 nm / 442 ft lbs @ 5000 rpm
redline 8560
body / frame Carbon Fiber reinforced Kevlar
front brakes Internally Vented Dual Circuit Discs w/Twin Calipers
rear brakes Internally Vented Dual Circuit Discs w/Twin Calipers
curb weight 820 kg / 1808 lbs
wheelbase 2650 mm / 104.3 in
length 4800 mm / 189.0 in
width 2000 mm / 78.7 in
transmission 5-Speed Manual
top speed ~350 kph / 217.5 mph