260
The second version of the Windsor, introduced during the middle of the 1962 model year, had a larger bore of 3.80 in (96.5 mm), increasing displacement to 260 cu in (4.3 L). Compression ratio was raised fractionally to 8.8:1. The engine was slightly heavier than the 221, at 482 lb (219 kg). Rated power (still SAE gross) rose to 164 hp (122 kW) @ 4400 rpm, with a peak torque of 258 lb·ft (350 N·m) @ 2200 rpm.
In 1962 and 1963 valve diameters remained the same as the 221, but starting in 1964 they were enlarged to 1.67 in. (42.4 mm) (intake) and 1.45 in (36.8 mm) (exhaust). Rated power was not changed.
In 1963 the 260 became the base engine on full-size Ford sedans. Later in the model year its availability was expanded to the Ford Falcon and Mercury Comet. The early "1964½" Ford Mustang also offered the 260, although it was dropped by mid-year, as did the 1964-1966 Sunbeam Tiger Mk I. The 1967 Sunbeam Tiger Mk II used the 289 CID V8 (see 289).
The special rally version of the Falcon and Comet and early AC Cobra sports cars used a high-performance version of the 260 with higher compression, hotter camshaft timing, and a four-barrel carburetor. This engine was rated (SAE gross) 260 hp (194 kW) @ 5800 rpm and 269 lb·ft (365 N·m) @ 4800 rpm.
Ford dropped the 260 after the 1964 model year.
Read more about this topic: Ford Windsor Engine