Engine    
320 cu in (5.2 L) Fireball I8
322 cu in (5.3 L) Nailhead V8

Transmission    
2-speed Dynaflow automatic

Dimensions
Wheelbase    
1949: 126.0 in (3,200 mm)
1950-52 Riviera sedans: 130.3 in (3,310 mm)
1950–52 others: 126.3 in (3,208 mm)
1953 Riviera sedans: 125.5 in (3,188 mm)
1953 others: 121.5 in (3,086 mm)
Length    
1949: 214.1 in (5,438 mm)
1950 Riviera sedans: 214.9 in (5,458 mm)
1950 others: 210.9 in (5,357 mm)
1951–52 Riviera sedans: 215.0 in (5,461 mm)
1951-52 others: 211.0 in (5,359 mm)
1953 Riviera sedans: 211.6 in (5,375 mm)
1953 others: 207.6 in (5,273 mm)
Width    
79.9 in (2,029 mm)
Height    
63.0 in (1,600 mm)
Curb weight    
4,200–4,700 lb (1,900–2,100 kg)

Buick Roadmaster on Wikipedia

RWD (rear-wheel drive), manual 3-speed gearbox
gasoline (petrol) engine with displacement: 4065 cm3 / 263.3 cui, advertised power: 93 kW / 125 hp / 126 PS ( SAE ), torque: 304 Nm / 224 lb-ft, 
characteristic dimensions: outside length: 5230 mm / 205.9 in, width: 1930 mm / 76 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1730 kg / 3815 lbs estimated curb weight: 1810 kg / 3990 lbs
top speed: 142 km/h (88 mph) ;
accelerations: 0- 60 mph 16.1© s; 0- 100 km/h 17.2© s ; 1/4 mile drag time (402 m) 20.5© s 
fuel consumption and mileage: average estimated by a-c©: 16.7 l/100km / 16.9 mpg (imp.) / 14 mpg (U.S.) / 6 km/l

RWD (rear-wheel drive), automatic 2-speed gearbox
gasoline (petrol) engine with displacement: 4065 cm3 / 263.3 cui, advertised power: 97 kW / 130 hp / 132 PS ( SAE ), torque: 308 Nm / 227 lb-ft, 
characteristic dimensions: outside length: 5230 mm / 205.9 in, width: 1930 mm / 76 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1771 kg / 3905 lbs estimated curb weight: 1850 kg / 4080 lbs
top speed: 144 km/h (89 mph) ;
accelerations: 0- 60 mph 17.9© s; 0- 100 km/h 19.3© s ; 1/4 mile drag time (402 m) 21.2© s 
fuel consumption and mileage: average estimated by a-c©: 16.6 l/100km / 17 mpg (imp.) / 14.2 mpg (U.S.) / 6 km/l

RWD (rear-wheel drive), manual 3-speed gearbox
gasoline (petrol) engine with displacement: 4065 cm3 / 248.1 cui, advertised power: 86 kW / 115 hp / 117 PS ( SAE ), torque: 287 Nm / 212 lb-ft, 
characteristic dimensions: outside length: 5182 mm / 204 in, width: 2017 mm / 79.4 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1640 kg / 3615 lbs estimated curb weight: 1720 kg / 3790 lbs
top speed: 134 km/h (83 mph) ;
accelerations: 0- 60 mph 17.9© s; 0- 100 km/h 19.3© s ; 1/4 mile drag time (402 m) 21.2© s 
fuel consumption and mileage: average estimated by a-c©: 16.6 l/100km / 17 mpg (imp.) / 14.1 mpg (U.S.) / 6 km/l

RWD (rear-wheel drive), automatic 2-speed gearbox
gasoline (petrol) engine with displacement: 4065 cm3 / 248.1 cui, advertised power: 91 kW / 122 hp / 124 PS ( SAE ), torque: 292 Nm / 215 lb-ft, 
characteristic dimensions: outside length: 5182 mm / 204 in, width: 2017 mm / 79.4 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1681 kg / 3705 lbs estimated curb weight: 1760 kg / 3880 lbs
top speed: 133 km/h (83 mph) ;
accelerations: 0- 60 mph 19.6© s; 0- 100 km/h 21© s ; 1/4 mile drag time (402 m) 21.7© s 
fuel consumption and mileage: average estimated by a-c©: 17.1 l/100km / 16.5 mpg (imp.) / 13.7 mpg (U.S.) / 5.9 km/l

RWD (rear-wheel drive), manual 3-speed gearbox
gasoline (petrol) engine with displacement: 4065 cm3 / 263.3 cui, advertised power: 92.5 kW / 124 hp / 126 PS ( SAE ), torque: 298 Nm / 220 lb-ft,
characteristic dimensions: outside length: 5182 mm / 204 in, width: 2032 mm / 80 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1799 kg / 3965 lbs estimated curb weight: 1880 kg / 4140 lbs
top speed: 133 km/h (83 mph) ;
accelerations: 0- 60 mph 17.9© s; 0- 100 km/h 19.3© s ; 1/4 mile drag time (402 m) 21.2© s 
fuel consumption and mileage: average estimated by a-c©: 17.5 l/100km / 16.1 mpg (imp.) / 13.4 mpg (U.S.) / 5.7 km/l

RWD (rear-wheel drive), automatic 2-speed gearbox
gasoline (petrol) engine with displacement: 4065 cm3 / 263.3 cui, advertised power: 95.5 kW / 128 hp / 130 PS ( SAE ), torque: 302 Nm / 223 lb-ft, 
characteristic dimensions: outside length: 5182 mm / 204 in, width: 2032 mm / 80 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1839 kg / 4055 lbs estimated curb weight: 1920 kg / 4230 lbs
top speed: 135 km/h (84 mph) ;
accelerations: 0- 60 mph 20.3© s; 0- 100 km/h 21.8© s ; 1/4 mile drag time (402 m) 22© s 
fuel consumption and mileage: average estimated by a-c©: 17.5 l/100km / 16.2 mpg (imp.) / 13.5 mpg (U.S.) / 5.7 km/l

RWD (rear-wheel drive), manual 3-speed gearbox
gasoline (petrol) engine with displacement: 5272 cm3 / 321.7 cui, advertised power: 122.5 kW / 164 hp / 167 PS ( SAE ), torque: 388 Nm / 286 lb-ft, 
characteristic dimensions: outside length: 5273 mm / 207.6 in, width: 2029 mm / 79.9 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1830 kg / 4035 lbs estimated curb weight: 1910 kg / 4210 lbs
top speed: 156 km/h (97 mph) ;
accelerations: 0- 60 mph 12.6© s; 0- 100 km/h 13.4© s ; 1/4 mile drag time (402 m) 19.2© s 
fuel consumption and mileage: average estimated by a-c©: 19 l/100km / 14.9 mpg (imp.) / 12.4 mpg (U.S.) / 5.3 km/l

RWD (rear-wheel drive), automatic 2-speed gearbox
gasoline (petrol) engine with displacement: 5272 cm3 / 321.7 cui, advertised power: 126.5 kW / 170 hp / 172 PS ( SAE ), torque: 388 Nm / 286 lb-ft,
characteristic dimensions: outside length: 5273 mm / 207.6 in, width: 2029 mm / 79.9 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1871 kg / 4125 lbs estimated curb weight: 1950 kg / 4300 lbs
top speed: 155 km/h (96 mph) ;
accelerations: 0- 60 mph 13.9© s; 0- 100 km/h 15© s ; 1/4 mile drag time (402 m) 19.5© s 
fuel consumption and mileage: average estimated by a-c©: 20.2 l/100km / 14 mpg (imp.) / 11.7 mpg (U.S.) / 5 km/l

RWD (rear-wheel drive), automatic 2-speed gearbox
gasoline (petrol) engine with displacement: 5247 cm3 / 320.2 cui, advertised power: 113.5 kW / 152 hp / 154 PS ( SAE ), torque: 380 Nm / 280 lb-ft, 
characteristic dimensions: outside length: 5302 mm / 208.75 in, width: 2032 mm / 80 in, wheelbase: 3213 mm / 126.5 in
reference weights: shipping weight 1971 kg / 4345 lbs estimated curb weight: 2050 kg / 4520 lbs
top speed: 140 km/h (87 mph) ;
accelerations: 0- 60 mph 17.5© s; 0- 100 km/h 18.7© s ; 1/4 mile drag time (402 m) 21.2© s 
fuel consumption and mileage: average estimated by a-c©: 20.6 l/100km / 13.7 mpg (imp.) / 11.4 mpg (U.S.) / 4.9 km/l

RWD (rear-wheel drive), automatic 2-speed gearbox
gasoline (petrol) engine with displacement: 5272 cm3 / 321.7 cui, advertised power: 140 kW / 188 hp / 190 PS ( SAE ), torque: 407 Nm / 300 lb-ft, 
characteristic dimensions: outside length: 5273 mm / 207.6 in, width: 2029 mm / 79.9 in, wheelbase: 3086 mm / 121.5 in
reference weights: shipping weight 1928 kg / 4250 lbs estimated curb weight: 2010 kg / 4430 lbs
top speed: 160 km/h (99 mph) ;
accelerations: 0- 60 mph 13.4© s; 0- 100 km/h 14.4© s ; 1/4 mile drag time (402 m) 19.3© s 
fuel consumption and mileage: average estimated by a-c©: 20.3 l/100km / 13.9 mpg (imp.) / 11.6 mpg (U.S.) / 4.9 km/l

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