1981 Porsche 928 S Technical Specifications
Originally displacing 4.5 L and featuring a single overhead camshaft design, Porsche enlarged and revised the engine in 1980 onwards. The engine was now a 4.7 L V8. European versions debuted with 221 kW; 296 hp (300 PS), and were upgraded to 228 kW; 306 hp (310 PS) for the 1984 model year. North America did not get the 1981 928 S.
| Model Year & Variant | 1981 928 S |
| Model Year | 1981 |
| Model Variant | 928 S |
| Type | V8 |
| Induction | Normally-aspirated |
| Cooling | Water-cooled |
| Valvetrain | Single overhead camshafts |
| Injection | Port injection |
| Bore & Stroke | 3.82 in/97.0 mm x 3.12 in/78.9 mm |
| Displacement | 284.5 ci/4,664 cc |
| Power | 234 bhp @ 5500 rpm |
| Torque | 263 lb-ft @ 4000 rpm |
| Max RPM | 6000 rpm |
| Compression Ratio | 9.3:1 |
| Transmission | 4-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 | 60.98 in/1,549 mm |
| Track Rear | 59.88 in/1,521 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 | ~ 7 seconds |
| Top Speed | 146 mph manual/143 mph automatic |
| MPG City | 13 manual/14 automatic |
| MPG Highway | 20 manual/18 automatic |
| MPG Combined | 15 manual/15 automatic |
| Fuel Tank Capacity | 22.7 U.S. gallons |
| Required Octane | Premium unleaded (91+) |
