Maserati Mistral 4.0
from 1966 to 1970
In 1966 a new 4 liter engine was offered on both the Sebring 2+2 and the Mistral Coupé, developing 265 hp. Introduced at the Geneva motor show, it was to be the last evolution of the straight-6 engine family, which could trace its roots back to the 3500 GT and the A6 series before that, and even the pre-war 6CM Grand Prix car. Top speed reached 255 kph (158 mph), no doubt aided by the car’s light weight and aerodynamic body.
Side vents with a chrome surround adorned the car’s front wings. Towards the end of the production run alloy wheels, identical to those on the Ghibli, were available to order. One of the 828 coupés produced during the total production run was delivered to Sir Peter Ustinov.
Technical Specifications
| Model | Mistral 4000 |
| Maserati internal code | Tipo AM109.A1 |
| Production start | 1966 |
| Number Produced | 828 (combined with 3.7) |
| Ignition | twin-plug, coil ignition |
| Lubrication | forced with delivery pump |
| Transmission | 5-speed + reverse synchronized, single dry plate clutch with flexible coupling and hydraulic drive |
| Reduction | 1:3.54 (3.77 on request, 3.31 with automatic gearbox) |
| Gear ratios | I=3.0; II=1.705; III=1.24; IV=1; V=0.85; R=3.17 |
| Chassis | tubular steel or aluminum ladder-frame platform chassis |
| Front suspension | ouble wishbones, coil springs, telescopic dampers and anti-roll bar |
| Rear suspension | cantilever leaf springs, hydraulic telescopic dampers and anti-roll bar |
| Brakes | discs, servo-assisted, hydraulic, independent dual circuit |
| Steering | worm and sector |
| Cooling system | water-cooled, centrifugal pump |
| Length | 177.16 inches (4,500 mm) |
| Width | 65.75 inches (1,675 mm) |
| Height | 51.18 inches (1,300 mm) |
| Wheelbase | 94.49 inches (2,400 mm) |
| Front track | 54.7 inches (1,390 mm) |
| Rear track | 53.5 inches (1,360 mm) |
| Dry weight | 3,152 lbs (1,430 Kg) |
| Tires | front/rear 205 VR x 15 Cinturato HS Pirelli |
| Wheels | wire wheels, 600x16 |
| Top speed | 155 mph (255 kmh) |
| Bodywork | two-door, 2+2 berlinetta |
| Fuel tank | two tanks, total 15.5 Imperial gallons (70 liters) |
| 0-62 mph | 6.2 sec (0 to 100 kph) |
| Production dates | 1966-1970 |
| Engine | straight 6 |
| Bore and stroke | 88x110 mm |
| Total displacement | 4014.21 cc |
| Displacements (unitary) | 669.035 cc |
| Compression ratio | 8.8:1 |
| Maximum power | 265 bhp at 5,200 rpm |
| Maximum torque | 39 Kgm at 3,500 rpm |
| Timing gear | two valves per cylinder, twin overhead camshafts |
| Fuel feed | Lucas indirect fuel injection |
| Fuel & lubricant | N.O 98/100 RM |