Buick Roadmaster (6th generation)
The pinnacle of 1950s Buick luxury, defined by its 'Nailhead' V8 and iconic VentiPorts.
- Power
- 236 bhp
- 0–60 mph
- 11.7 s
- Top speed
- 109 mph
- Est. value
- $18k–$65k
About the Buick Roadmaster
The 1955 Roadmaster represented the top of Buick's hierarchy, sharing the C-body platform with Cadillac but retaining its own distinct character. It is powered by the famous 322 cubic-inch 'Nailhead' V8, so named for its small, vertical valves, which provided high torque for effortless cruising. The 1955 model year is particularly noted for its revised front grille and the introduction of the variable-pitch Dynaflow transmission, which improved acceleration. As a collector piece, it is prized for its heavy chrome detailing, panoramic 'wraparound' windscreen, and the signature four VentiPorts on the front wings.
Buick Roadmaster specs
The Buick Roadmaster produces 236 bhp (176 kW) and 447 Nm (330 lb-ft) of torque. It reaches 60 mph in 11.7 seconds and has a top speed of 109 mph (175 km/h).
| Make | Buick |
|---|---|
| Model | Roadmaster |
| Generation | Sixth Generation (6th generation) |
| Trim | 5.3 |
| Years | 1954–1956 |
| Type | Classic |
| Body style | Sedan |
| Country | United States |
| Original price | About $3,500 when new |
| Engine | 322 cu in (5.3-litre) 'Nailhead' V8 |
|---|---|
| Displacement | 5,277 cc (5.3 litres) |
| Induction | Naturally aspirated |
| Power | 236 bhp (176 kW) at 4,600 rpm |
| Torque | 447 Nm (330 lb-ft) |
| 0–60 mph | 11.7 s |
| Top speed | 109 mph (175 km/h) |
| Transmission | 2-speed Dynaflow automatic |
| Drivetrain | Rear-wheel drive |
| Weight | 1,960 kg (4,321 lb) |
| Power-to-weight | 120 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Buick Roadmaster worth?
A typical Buick Roadmaster is estimated to be worth $18,000 – $65,000 (about £13,000 – £48,000).
Its original price when new was about $3,500.
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Buick Roadmaster rarity in CarSpot
The Buick Roadmaster is an Uncommon card in CarSpot, with a rarity score of 37 out of 100. Hot hatches and premium sporty cars. An Uncommon card is worth 20 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Buick Roadmaster fun facts
- The 1955 Roadmaster featured a new 'Variable Pitch' Dynaflow transmission, which used stator blades that changed angles to provide a 'passing gear' effect.
- The 'Nailhead' V8 engine earned its nickname because its small, vertically mounted valves resembled common nails.
- In 1955, Buick reached its post-war production peak, briefly becoming the third best-selling car brand in America behind Chevrolet and Ford.