For pre-production aircraft #6 & #7:
Data from Thomason, Miller, Logan
General characteristics
Crew: 2 (pilot and weapons system operator)
Length: 68 ft 10 in (20.98 m)
Wingspan: 
Spread: 70 ft (21.3 m)
Swept: 33 ft 11 in (10.34 m)
Height: 15 ft 9 in (4.80 m)
Wing area: 
Spread: 655.5 ft² (60.9 m²)
Swept: 550 ft² (51.1 m²)
Airfoil: NACA 64-210.68 root, NACA 64-209.80 tip
Empty weight: 46,100 lb (20,910 kg)
Loaded weight: 79,000 lb (35,800 kg)
Max.
takeoff weight: 88,000 lb (39,900 kg)
Powerplant: 2 × Pratt & Whitney TF30-P-3 turbofans
Dry thrust: 10,750 lbf (47.8 kN)  each
Thrust with afterburner: 18,500 lbf (82.3 kN) each
Performance
Maximum speed: Mach 2.2 (1,450 mph, 2,330 km/h)
Range: 2,100 mi (1,830 nmi, 3,390 km) ; with 6 AIM-54 missiles and 23,000 lb fuel internal
Ferry range: 3,200 mi (2,780 nmi, 5,150 km) ; with 2 x 450 gal external tanks
Service ceiling: 65,000 ft (19,800 m)
Rate of climb: 21,300 ft/min (108 m/s)
Wing loading: 
Spread: 120 lb/ft² (586 kg/m²)
Swept: 144 lb/ft² (703 kg/m²)
Thrust/weight: 0.47
Armament
Guns: 1× M61 Vulcan 20 mm (0.787 in) Gatling cannon (seldom fitted)
Hardpoints: 6 underwing pylons for ordnance and external fuel tanks
Missiles: 6 x AIM-54 Phoenix long range air-air missiles (four under wings, two in weapons bay)
Avionics
AN/AWG-9 Pulse-Doppler radar
For pre-production aircraft #6 & #7:
Data from Thomason, Miller, Logan
General characteristics
Crew: 2 (pilot and weapons system operator)
Length: 68 ft 10 in (20.98 m)
Wingspan: 
Spread: 70 ft (21.3 m)
Swept: 33 ft 11 in (10.34 m)
Height: 15 ft 9 in (4.80 m)
Wing area: 
Spread: 655.5 ft² (60.9 m²)
Swept: 550 ft² (51.1 m²)
Airfoil: NACA 64-210.68 root, NACA 64-209.80 tip
Empty weight: 46,100 lb (20,910 kg)
Loaded weight: 79,000 lb (35,800 kg)
Max. takeoff weight: 88,000 lb (39,900 kg)
Powerplant: 2 × Pratt & Whitney TF30-P-3 turbofans
Dry thrust: 10,750 lbf (47.8 kN)  each
Thrust with afterburner: 18,500 lbf (82.3 kN) each
Performance
Maximum speed: Mach 2.2 (1,450 mph, 2,330 km/h)
Range: 2,100 mi (1,830 nmi, 3,390 km) ; with 6 AIM-54 missiles and 23,000 lb fuel internal
Ferry range: 3,200 mi (2,780 nmi, 5,150 km) ; with 2 x 450 gal external tanks
Service ceiling: 65,000 ft (19,800 m)
Rate of climb: 21,300 ft/min (108 m/s)
Wing loading: 
Spread: 120 lb/ft² (586 kg/m²)
Swept: 144 lb/ft² (703 kg/m²)
Thrust/weight: 0.47
Armament
Guns: 1× M61 Vulcan 20 mm (0.787 in) Gatling cannon (seldom fitted)
Hardpoints: 6 underwing pylons for ordnance and external fuel tanks
Missiles: 6 x AIM-54 Phoenix long range air-air missiles (four under wings, two in weapons bay)
Avionics
AN/AWG-9 Pulse-Doppler radar
General Dynamics–Grumman F-111B