1975 Cadillac Calais vs. 2005 Ford Shelby GR-1 Concept
To start off, 2005 Ford Shelby GR-1 Concept is newer by 30 year(s). Which means there will be less support and parts availability for 1975 Cadillac Calais. In addition, the cost of maintenance, including insurance, on 1975 Cadillac Calais would be higher. At 8,192 cc (8 cylinders), 1975 Cadillac Calais is equipped with a bigger engine. In terms of performance, 2005 Ford Shelby GR-1 Concept (605 HP @ 6750 RPM) has 425 more horse power than 1975 Cadillac Calais. (180 HP @ 4400 RPM) In normal driving conditions, 2005 Ford Shelby GR-1 Concept should accelerate faster than 1975 Cadillac Calais. With that said, vehicle weight also plays an important factor in acceleration. 1975 Cadillac Calais weights approximately 505 kg more than 2005 Ford Shelby GR-1 Concept.
Compare all specifications:
| 1975 Cadillac Calais | 2005 Ford Shelby GR-1 Concept | |
| Make | Cadillac | Ford |
| Model | Calais | Shelby GR-1 Concept |
| Year Released | 1975 | 2005 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 8192 cc | 6392 cc |
| Engine Cylinders | 8 cylinders | 10 cylinders |
| Engine Type | V | V |
| Horse Power | 180 HP | 605 HP |
| Engine RPM | 4400 RPM | 6750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 2274 kg | 1769 kg |
| Vehicle Length | 5880 mm | 4420 mm |
| Vehicle Width | 2030 mm | 1900 mm |
| Wheelbase Size | 3310 mm | 2550 mm |
