The 158 was a single-seater designed by Gioacchino Colombo in the spring of 1937 at the request of Enzo Ferrari. The 158, affectionately called the ”Alfetta” by enthusiasts, preserves the traditional Alfa Romeo engine setup and arrangement of mechanical assemblies on the chassis.
Engine Configuration Straight 8 Location Front, longitudinally mounted Construction alloy block and head Displacement 1,479 cc / 90.3 cu in Bore / Stroke 58.0 mm (2.3 in) / 70.0 mm (2.8 in) Compression 6.5:1 Valvetrain 2 valves / cylinder, DOHC Fuel feed Carburettor Aspiration Roots-Type Supercharger Power 350 bhp / 261 kW @ 8,500 rpm BHP/Liter 237 bhp / liter
Drivetrain Chassis aluminium body panels on steel tubular chassis Front suspension trailing links, transverse leaf spring, friction/hydraulic shock absorbers Rear suspension swing axles, transverse semi-elliptic leaf spring, friction/hydraulic shock absorbers Steering worm-and-sector Brakes Lockheed hydraulic drums, all-round Gearbox 4 speed Manual Drive Rear wheel drive
Dimensions Weight 700 kilo / 1,543 lbs Length / Width / Height 4,200 mm (165.4 in) / 1,550 mm (61 in) / 1,120 mm (44.1 in) Wheelbase / Track (fr/r) 2,502 mm (98.5 in) / 1,270 mm (50 in) / 1,321 mm (52 in)
Performance figures Power to weight 0.5 bhp / kg Top Speed 290 km/h (180 mph)
