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Porsche 928 (1978) – Specifications & Performance

1978 Porsche 928 Technical Specifications

The Porsche Model 928 was launched in 1977 and was powered by a water-cooled V-8 engine. Not only was it a different design compared to the 911 model, but its engine was also cooled differently. Originally displacing 4.5 L and featuring a single overhead camshaft design, it was rated at 219 hp (163 kW; 222 PS) for the North American market and 240 PS (177 kW; 237 hp) in other markets.

Model Year & Variant 1978 928
Model Year 1978
Model Variant 928
Type V8
Induction Normally-aspirated
Cooling Water-cooled
Valvetrain Single overhead camshafts
Injection Port injection
Bore & Stroke 3.74 in/95.0 mm x 3.12 in/78.9 mm
Displacement 272.91 ci/4,474 cc
Power 230 @ 5250 rpm
Torque 253 lb-ft @ 3600 rpm
Max RPM 6000 rpm
Compression Ratio 8.5:1
Transmission 5-speed manual, 3-speed auto
Layout Front-engined, rear-wheel drive
Curb Weight 3,197 lbs. manual/3,285 lbs. auto
Height 51.61 in/1,311 mm
Ground Clearance 4.69 in/119 mm
Length 175.67 in/4,462 mm
Wheelbase 98.43 in/2,500 mm
Width 72.28 in/1,836 mm
Track Front 61.06 in/1,551 mm
Track Rear 60.24 in/1,530 mm
Drag Coefficient 0.38
Wheel Size Front 16 x 7
Wheel Size Rear 16 x 7
Tire Size Front 225/50VR-16
Tire Size Rear 225/50VR-16
Brake Caliper Front Floating 1-piston
Brake Caliper Rear Floating 1-piston
Brake Disc Type Front Ventilated discs
Brake Disc Type Rear Ventilated discs
Brake 11.10 in/282 mm x .81 in/20.6 mm
Brake Disc Size Rear 11.42 in/290 mm x .81 in/20.6 mm
0 to 60 mph time N/A
Top Speed (Automatic) 143 mph manual/140 mph automatic
Top Speed (Manual)
MPG City N/A
MPG Highway N/A
MPG Combined N/A
Fuel Tank Capacity 22.7 U.S. gallons
Required Octane Premium unleaded (91+)