This automobile has a 2 door coupé type body with a front located engine driving through the rear wheels.
The Riviera Gran Sport 'GS' forms part of Buick's Series 49400 family of cars.
It is powered by a naturally aspirated engine of 7 litre capacity. This powerplant features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. It develops 360 bhp (365 PS/268 kW) of power at 5000 rpm, and maximum torque of 644 N·m (475 lb·ft/65.7 kgm) at 3200 rpm.
The power is delivered to the wheels by means of a 3 speed automatic gearbox.
The quoted weight at the kerb is 1970 kg.
The Buick Riviera Gran Sport 'GS' is claimed to attain a maxiumum speed of 193 km/h, or 120 mph.
Full specs