| Model type | 637 |
| Production | 1986 |
| Production | 1 example |
| Comments | Projet pour le championnat CART. Développement par Alboreto |
| Type | V8 à 90° turbo (034) |
| Layout | Longitudinal arrière |
| Displacement | 2.593 cm3 |
| Max power | 710 ch (522.2 KW) to 12000 rpm |
| Stroke x bore | 80.0 x 64.5 mm |
| Valves per cylinder | 4 |
| Fuel system | 1 turbo |
| Specific output | 274 ch/litre |
| Length | 4.420 mm |
| Width | 1.990 mm |
| Wheelbase | 2.812 mm |
| Front track | 1.708 mm |
| Rear track | 1.610 mm |
| Design | Gustav Brunner |
| Number of seats | 1 |
| Transmission | Propulsion |
| Number of gears | 6 rapports |