Plymouth Superbird I 426 Hemi V8 (SAE gross) Coupe
317 kW431 PS425 hp664 Nm1970
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- Power
- 317 kW 431 PS · 425 hp
- Torque
- 664 Nm 490 lb-ft
- Kerb weight
- 1,742 kg
- Length
- 5,613 mm
Built 1970, the Plymouth Superbird I 7.0 426 Hemi V8 (SAE gross) coupe develops 317 kW (431 PS) and 664 Nm of torque from a 7.0-litre eight-cylinder petrol engine. In the Superbird I 7.0 426 Hemi V8 (SAE gross), power goes to the rear wheels.
No other version of the Superbird I matches its output among 3 versions — that is 13% more than the entry 7.2 440 Super Commando V8 (SAE gross) (280 kW). On top of that, it is the best on power-to-weight (247 PS per tonne). According to our catalog data, the Superbird I 7.0 426 Hemi V8 (SAE gross) weighs 1,742 kg.
The Superbird I 7.0 426 Hemi V8 (SAE gross) in numbers: strong points
- Most powerful version of the Superbird I: 317 kW (431 PS)
- Best power-to-weight in the range: 247 PS per tonne
Dimensions drawing
To scale · width without mirrors
Zoom in to read the measurements — or see the table below.
grid 500 mm1 ft Side view: dashed lines mark the axles
Engine
| Fuel | Petrol |
|---|---|
| Displacement | 6,981 cm³ 7.0 l · 426 cu in |
| Cylinders | 8 |
| Power | 317 kW 431 PS · 425 hp |
| Torque | 664 Nm 490 lb-ft |
| Drive | Rear-wheel drive |
Dimensions and weight
| Length | 5,613 mm 221.0 in |
|---|---|
| Width | 1,941 mm 76.4 in |
| Height | 1,560 mm 61.4 in |
| Wheelbase | 2,941 mm 115.8 in |
| Kerb weight | 1,742 kg 3,840 lb |
Production
| Body type | Coupe |
|---|---|
| Years | 1970 |
| Generation | Superbird I (1970) |
Compare size All Superbird I versions All Plymouth spec sheets
Data sources
Data checked by an editor against the sources below.
Data: 13 of 25 fields · 1 source · data changed 23 Oct 2026