1975 AC 428 vs. 1971 Triumph Spitfire
To start off, 1975 AC 428 is newer by 4 year(s). Which means there will be less support and parts availability for 1971 Triumph Spitfire. In addition, the cost of maintenance, including insurance, on 1971 Triumph Spitfire would be higher. At 7,003 cc (8 cylinders), 1975 AC 428 is equipped with a bigger engine. In terms of performance, 1975 AC 428 (298 HP @ 4600 RPM) has 241 more horse power than 1971 Triumph Spitfire. (57 HP @ 5200 RPM). In normal driving conditions, 1975 AC 428 should accelerate faster than 1971 Triumph Spitfire. With that said, vehicle weight also plays an important factor in acceleration. 1975 AC 428 weights approximately 650 kg more than 1971 Triumph Spitfire. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1975 AC 428 (639 Nm @ 2800 RPM) has 542 more torque (in Nm) than 1971 Triumph Spitfire. (97 Nm @ 3000 RPM). This means 1975 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1971 Triumph Spitfire.
Compare all specifications:
| 1975 AC 428 | 1971 Triumph Spitfire | |
| Make | AC | Triumph |
| Model | 428 | Spitfire |
| Year Released | 1975 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 1296 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 298 HP | 57 HP |
| Engine RPM | 4600 RPM | 5200 RPM |
| Torque | 639 Nm | 97 Nm |
| Torque RPM | 2800 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1430 kg | 780 kg |
| Vehicle Length | 4430 mm | 3790 mm |
| Vehicle Width | 1710 mm | 1480 mm |
| Vehicle Height | 1310 mm | 1210 mm |
| Wheelbase Size | 2450 mm | 2110 mm |
