1958 AC Ace vs. 1981 Pontiac Firebird
To start off, 1981 Pontiac Firebird is newer by 23 year(s). Which means there will be less support and parts availability for 1958 AC Ace. In addition, the cost of maintenance, including insurance, on 1958 AC Ace would be higher. At 4,942 cc (8 cylinders), 1981 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1981 Pontiac Firebird (200 HP @ 4000 RPM) has 126 more horse power than 1958 AC Ace. (74 HP @ 4500 RPM) In normal driving conditions, 1981 Pontiac Firebird should accelerate faster than 1958 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 1981 Pontiac Firebird weights approximately 726 kg more than 1958 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, 1981 Pontiac Firebird (459 Nm) has 292 more torque (in Nm) than 1958 AC Ace. (167 Nm). This means 1981 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1958 AC Ace.
Compare all specifications:
| 1958 AC Ace | 1981 Pontiac Firebird | |
| Make | AC | Pontiac |
| Model | Ace | Firebird |
| Year Released | 1958 | 1981 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 4942 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 74 HP | 200 HP |
| Engine RPM | 4500 RPM | 4000 RPM |
| Torque | 167 Nm | 459 Nm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 890 kg | 1616 kg |
| Vehicle Length | 3850 mm | 5040 mm |
| Vehicle Width | 1520 mm | 1860 mm |
| Vehicle Height | 1250 mm | 1260 mm |
| Wheelbase Size | 2290 mm | 2750 mm |
| Fuel Tank Capacity | 59 L | 79 L |
