1998 Buick Riviera Coupe

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Supercharger compressor

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3,791 cc 3.8 liters 6 V front transverse engine with 96.5 mm bore, 86.4 mm stroke, 9.4 compression ratio, cast iron block, cast iron head, overhead valve and two valves per cylinder

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Unleaded fuel

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Fuel economy EPA highway (l/100km): 8.7

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Multi-point injection fuel system

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72 liter fuel tank

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Power: 179 kW , 240 HP @ 5,200 rpm; 280 ft lb , 380 Nm @ 3,600 rpm