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Information on the Porsche 928S Cars
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The Porsche 928S Specifications
928S - 1983-1986
Engine: Water cooled 90 degree V8, aluminum block and heads
Bore and Stroke: 3.74 x 3.11 in (95.0 x 78.9 mm)
Displacement: 4,664cc
Horsepower :238@5,250 rpm
Power to weight ratio: 12.4 lbs per horsepower
Compression ratio: 9.3:1
Cd: .34
Fuel system:K-jetronic (Bosch)
Drivetrain:5 speed manual transmission
4 speed automatic
Suspension:Front: Upper and lower A-arms, coil springs, tube shocks, anti-roll bar

Rear: Upper lateral links, lower trailing arms, Weissach axle, coil springs, tube shocks, anti-roll bar

Dimensions: Curb weight: 3,540 lbs
Wheelbase: 98.4"
Length: 175.1"
Width: 72.3"
Height: 51.7"
Track front/rear: 60.8"/59.6"
Ground clearance: 4.5"
Brakes and Wheels:Power assisted, internally vented discs
16x7.0" front, 16x7.0" rear cast aluminum wheels
Fuel Economy:13 mpg (city) 17 mpg (hwy)
Performance:0-60mph: 6.1 seconds
0-1/4 mile: 14.6s @ 92.6 mph
Top Speed: 154 mph
In 1985, the 928's displacement was increased in size to 4,957cc (100.0"x 78.9"). The compression was also raised to 10.0:1. Output horsepower was up to 284 in 1985, and 288 in 1986