1966 Alfa Romeo Spider vs. 1964 Triumph TR4
To start off, 1966 Alfa Romeo Spider is newer by 2 year(s). Which means there will be less support and parts availability for 1964 Triumph TR4. In addition, the cost of maintenance, including insurance, on 1964 Triumph TR4 would be higher. At 2,582 cc (6 cylinders), 1966 Alfa Romeo Spider is equipped with a bigger engine. In terms of performance, 1966 Alfa Romeo Spider (163 HP @ 5900 RPM) has 63 more horse power than 1964 Triumph TR4. (100 HP @ 4700 RPM). In normal driving conditions, 1966 Alfa Romeo Spider should accelerate faster than 1964 Triumph TR4. With that said, vehicle weight also plays an important factor in acceleration. 1966 Alfa Romeo Spider weights approximately 365 kg more than 1964 Triumph TR4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1966 Alfa Romeo Spider (220 Nm @ 4000 RPM) has 48 more torque (in Nm) than 1964 Triumph TR4. (172 Nm @ 3350 RPM). This means 1966 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 1964 Triumph TR4.
Compare all specifications:
| 1966 Alfa Romeo Spider | 1964 Triumph TR4 | |
| Make | Alfa Romeo | Triumph |
| Model | Spider | TR4 |
| Year Released | 1966 | 1964 |
| Body Type | Roadster | Roadster |
| Engine Position | Front | Front |
| Engine Size | 2582 cc | 2138 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 163 HP | 100 HP |
| Engine RPM | 5900 RPM | 4700 RPM |
| Torque | 220 Nm | 172 Nm |
| Torque RPM | 4000 RPM | 3350 RPM |
| Engine Bore Size | 83 mm | 86 mm |
| Engine Stroke Size | 79.6 mm | 92 mm |
| Engine Compression Ratio | 9.0:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1330 kg | 965 kg |
| Vehicle Length | 4510 mm | 3950 mm |
| Vehicle Width | 1610 mm | 1480 mm |
| Vehicle Height | 1390 mm | 1280 mm |
| Wheelbase Size | 2510 mm | 2240 mm |
| Fuel Tank Capacity | 46 L | 53 L |
