Data from Flight Operating Instructions P-39Q; Memorandum Report on P-39Q-5 Airplane
General characteristics
Crew: 1
Length: 30 ft 2 in (9.19 m)
Wingspan: 34 ft 0 in (10.36 m)
Height: 12 ft 5 in (3.78 m)
Wing area: 213 sq ft (19.8 m²)
Empty weight: 6,516 lb (2,956 kg)
Gross weight: 7,570 lb (3,434 kg)
Max takeoff weight: 8,400 lb (3,810 kg)
Powerplant:  × Allison V-1710-85 V-12 liquid-cooled piston engine, 1,200 hp (890 kW)   at 9,000 ft (2,743 m) (using emergency power)
Propellers: 3-bladed constant-speed propeller
Performance
Maximum speed: 389 mph (626 km/h, 338 kn)
Stall speed: 95 mph (153 km/h, 83 kn) power off, Flaps & undercarriage down
Never exceed speed: 525 mph (845 km/h, 456 kn)
Range: 525 mi (845 km, 456 nmi) on internal fuel
Service ceiling: 35,000 ft (11,000 m)
Rate of climb: 3,805 ft/min (19.33 m/s) at 7,400 ft (2,256 m) (using emergency power)
Time to altitude: 15,000 ft (4,572 m) in 4 minutes 30 seconds, at 160 mph (260 km/h)
Wing loading: 34.6 lb/sq ft (169 kg/m²)
Armament
Guns: 
1 × 37 mm M4 cannon in nose (firing through the propeller hub) with 30 rounds of HE-T ammunition.

2 × .50 cal (12.7 mm) synchronized Browning M2 machine guns, nose-mounted; 200 rounds per gun
2 × .50 cal (12.7 mm) Browning M2 machine guns (one each wing), 300 rounds per gun
Bombs: Up to 500 lb (230 kg) of bombs under wings and belly
Data from Flight Operating Instructions P-39Q; Memorandum Report on P-39Q-5 Airplane
General characteristics
Crew: 1
Length: 30 ft 2 in (9.19 m)
Wingspan: 34 ft 0 in (10.36 m)
Height: 12 ft 5 in (3.78 m)
Wing area: 213 sq ft (19.8 m²)
Empty weight: 6,516 lb (2,956 kg)
Gross weight: 7,570 lb (3,434 kg)
Max takeoff weight: 8,400 lb (3,810 kg)
Powerplant:  × Allison V-1710-85 V-12 liquid-cooled piston engine, 1,200 hp (890 kW)   at 9,000 ft (2,743 m) (using emergency power)
Propellers: 3-bladed constant-speed propeller
Performance
Maximum speed: 389 mph (626 km/h, 338 kn)
Stall speed: 95 mph (153 km/h, 83 kn) power off, Flaps & undercarriage down
Never exceed speed: 525 mph (845 km/h, 456 kn)
Range: 525 mi (845 km, 456 nmi) on internal fuel
Service ceiling: 35,000 ft (11,000 m)
Rate of climb: 3,805 ft/min (19.33 m/s) at 7,400 ft (2,256 m) (using emergency power)
Time to altitude: 15,000 ft (4,572 m) in 4 minutes 30 seconds, at 160 mph (260 km/h)
Wing loading: 34.6 lb/sq ft (169 kg/m²)
Armament
Guns: 
1 × 37 mm M4 cannon in nose (firing through the propeller hub) with 30 rounds of HE-T ammunition.
2 × .50 cal (12.7 mm) synchronized Browning M2 machine guns, nose-mounted; 200 rounds per gun
2 × .50 cal (12.7 mm) Browning M2 machine guns (one each wing), 300 rounds per gun
Bombs: Up to 500 lb (230 kg) of bombs under wings and belly
Bell P-39 Airacobra