Pontiac GM Pontiac Trophy 421 HO, Engine
| Engine capacity | 6,902 cm³ |
| Maximum power (range), hp | 376 |
| Maximum torque, N*m (kg*m) at rpm. | 625 (64) / 3600 |
| Fuel used | Petrol |
| Fuel consumption, l/100 km | 26.9 - 30 |
| Engine type | V-shaped, 8-cylinder |
| Additional engine information | 3 Rochester 2-barrel carburetors |
| Maximum power, hp (kW) at rpm | 376 (277) / 5000 |
| Compression Ratio (Range) | 10.75 |
| Cylinder diameter (range), mm | 103.98 |
| Piston stroke (range), mm | 101.6 |
| Valve drive | OHV |
| Number of valves per cylinder (range) | 2 |