At the 1982 Geneva Motor Show, the Countach finally got the 5-liter engine it was originally design for. This was the first Countach update in four years, following a stepwise evolution of the model since the production version was introduced in 1974.
The 5000S was initially called the 500S, but this new moniker was somewhat misleading because the new engine only displaced 4754 cc. This increased power over the preceding 4-liter engine by 50 bhp.
Some later cars featured a new rear end with an extended trailing edge that lengthened the car by an inch or so. Over a three year period around 320 cars were produced.
The first 20 cars were fitted with Campagnolo Cast Magnesium wheels but these were replaced by Ozzeta Electron units.
| type | Series Production Car |
| production years | 1982 – 1985 |
| released at | 1982 Geneva Motor Show |
| built at | Santa’Agata Bolognese, Italy |
| price $ | $ 118,000 |
| predeccesor | 1978 Lamborghini Countach LP400S |
| succeccesor | 1986 Lamborghini Countach LP5000 QV |
| engine | 60° V12 |
| position | Mid, Longitudinal |
| aspiration | Natural |
| valvetrain | DOHC 2 Valves / Cyl |
| fuel feed | 6 Twin-throat 45 DCOE Weber Carburetors |
| displacement | 4754 cc / 290.1 in³ |
| bore | 85.5 mm / 3.37 in |
| stroke | 69.0 mm / 2.72 in |
| compression | 9.2:1 |
| power | 279.6 kw / 375 bhp @ 7000 rpm |
| specific output | 78.88 bhp per litre |
| bhp/weight | 251.68 bhp per tonne |
| torque | 409.5 nm / 302.0 ft lbs @ 4500 rpm |
| body / frame | Aluminum Body over Tubular Steel Spaceframe |
| driven wheels | RWD |
| wheel type | Ozzeta Electron |
| front tires | 205/50 VR-15 Pirelli P7 |
| rear tires | 345/35 VR-15 Pirelli P7 |
| front brakes | Girling Ventilated Discs w/Vacuum Assist |
| rear brakes | Girling Ventilated Discs w/Vacuum Assist |
| front wheels | F 38.1 x 21.6 cm / 15.0 x 8.5 in |
| rear wheels | R 38.1 x 30.5 cm / 15.0 x 12.0 in |
| steering | Unassisted Rack & Pinion |
| f suspension | Independant w/Coil Springs, Telescopic Shock Absorbers |
| r suspension | Independant w/Coil Springs, Telescopic Shock Absorbers |
| curb weight | 1490 kg / 3285 lbs |
| wheelbase | 2450 mm / 96.5 in |
| front track | 1492 mm / 58.7 in |
| rear track | 1606 mm / 63.2 in |
| length | 4140 mm / 163.0 in |
| width | 2000 mm / 78.7 in |
| height | 1070 mm / 42.1 in |
| transmission | 5-Speed Manual |
| tran clutch | Single dry plate |
| gear ratios | 2.256:1, 1.769:1, 1.310:1, 0.990:1, 0.775:1 |
| final drive | 4.09:1 |
| top speed | ~300.0 kph / 186.4 mph |
| 0 – 60 mph | ~5.6 seconds |
| fuel capacity | 120 litres |
