P-40N (manufactured 1943-44), the final production model. The P-40N featured a stretched rear fuselage to counter the torque of the larger, late-war Allison engine, and the rear deck of the cockpit behind the pilot was cut down at a moderate slant to improve rearward visibility. A great deal of work was also done to try and eliminate excess weight to improve the Warhawk's climb rate. Early N production blocks dropped a .50 in (12.7 mm) gun from each wing, bringing the total back to four; later production blocks reintroduced it after complaints from units in the field. Supplied to Commonwealth air forces as the Kittyhawk Mk IV. A total of 553 P-40Ns were acquired by the Royal Australian Air Force, making it the variant most commonly used by the RAAF. Subvariants of the P-40N ranged widely in specialization from stripped down four-gun "hot rods" which could reach the highest top speeds of any production variant of the P-40 (up to 380 mph), to overweight types with all the extras intended for fighter-bombing or even training missions.
Specifications: (P-40N):
Engine: 1360hp Allison V-1710-81 inline piston engine
Weight: Empty 6,000 lbs., Max Takeoff 11,400 lbs
Wing Span: 37ft. 4in.
Length: 33ft. 4in.
Height: 12ft. 4in.
Performance:
Maximum Speed at 10,000ft: 378mph
Ceiling: 38,000ft
Range: 840 miles (with no external tanks)
Armament:
Six 12.7mm (0.5-inch) wing-mounted machine guns
Up to 1,500lbs of bombs on three wing hard-points
Number Built: Approximately 15,000
Most produced P-40 variant, apparently.