1956 AC Ace vs. 1978 Pontiac Firebird
To start off, 1978 Pontiac Firebird is newer by 22 year(s). Which means there will be less support and parts availability for 1956 AC Ace. In addition, the cost of maintenance, including insurance, on 1956 AC Ace would be higher. At 6,547 cc (8 cylinders), 1978 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1978 Pontiac Firebird (285 HP @ 4400 RPM) has 162 more horse power than 1956 AC Ace. (123 HP @ 6000 RPM) In normal driving conditions, 1978 Pontiac Firebird should accelerate faster than 1956 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 1978 Pontiac Firebird weights approximately 702 kg more than 1956 AC Ace. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1978 Pontiac Firebird (421 Nm) has 254 more torque (in Nm) than 1956 AC Ace. (167 Nm). This means 1978 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1956 AC Ace.
Compare all specifications:
| 1956 AC Ace | 1978 Pontiac Firebird | |
| Make | AC | Pontiac |
| Model | Ace | Firebird |
| Year Released | 1956 | 1978 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 6547 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 123 HP | 285 HP |
| Engine RPM | 6000 RPM | 4400 RPM |
| Torque | 167 Nm | 421 Nm |
| Engine Bore Size | 66 mm | 104.7 mm |
| Engine Stroke Size | 96 mm | 95.3 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 894 kg | 1596 kg |
| Vehicle Length | 3850 mm | 4880 mm |
| Vehicle Width | 1520 mm | 1870 mm |
| Vehicle Height | 1250 mm | 1290 mm |
| Wheelbase Size | 2290 mm | 2750 mm |
| Fuel Tank Capacity | 59 L | 76 L |
