Ford 351 Windsor
| Ford Windsor | |
|---|---|
| Overview | |
| Manufacturer | Ford Motor Company |
| Also called | Small-block Ford |
| Production | July 1961–December 2000 |
| Combustion chamber | |
| Configuration | 90° OHV small-block V8, 4.380" bore spacing |
| Displacement | 221 cu in (3.6 L) 255 cu in (4.2 L) 260 cu in (4.3 L) 289 cu in (4.7 L) 302 cu in (4.9 L) 335 cu in (5.5 L) 351 cu in (5.8 L) |
| Cylinder bore | 4.000" (289, 302, 351W) 3.900" (335) 3.800" (260) 3.680" (255) 3.500" (221) |
| Piston stroke | 3.510" (335) 3.500" (351W) 3.000" (302 & 255) 2.870" (221, 260, 289) |
| Cylinder block alloy | Cast iron Deck Height: 9.480" ('69-'70 351W ) 9.503" ('71-'96 351W) 8.201"-.210" (BOSS 302) 8.206" (221, 260, 289, 302) |
| Cylinder head alloy | Cast iron |
| Valvetrain |
Pushrod OHV Cast iron cam, Flat tappet ('62-'84 302, '69-'93 351W) Steel roller cam & lifters ('85-'01 302, '94-'97 351W) |
| Compression ratio | 9.0:1 9.5:1, 10.5:1, 8.8:1, 8:1 |
| Combustion | |
| Supercharger | Naturally aspirated |
| Fuel system |
Carbureted (1962-1985 302/1987 351) EFI (1986-2001) (88-97 351) |
| Fuel type | 87 Octane |
| Oil system | Wet sump |
| Cooling system | Jacketed block |
| Output | |
| Power output | 140-290 |
| Torque output | 262-385 |
| Dimensions | |
| Length | 27.50" (302, 351W) |
| Width | 21.00" (351W) 18.75" (302) |
| Height | 23.75" (351W) 20.75" (302) |
| Chronology | |
| Predecessor | Ford Y-block engine |
| Successor | Ford Modular engine |
The Ford Windsor engine is a series of automobile V8 engines built by the Ford Motor Company beginning in July 1961. The engine was discontinued in new vehicles in 2001, but remains available for purchase from Ford Racing and Performance Parts as a crate engine. The "Windsor" designation is a retroactive name for the family of engines sharing a common basic engine block design. Ford adopted the designation specifically to distinguish the 351 cu in (5.8 L) version from the Cleveland 335-family engine that had the same displacement, but a significantly different configuration.
The engine was designed as a successor to the Ford Y-block engine. Production began in 1961 for installation in the 1962 model year Ford Fairlane and Mercury Meteor. Originally produced with a displacement of 221 cu in (3.6 L), it eventually increased to a maximum displacement of 351 cu in (5.8 L), but was most commonly sold with a displacement of 302 cu in (4.9 L) (later marketed as "5.0 L"), with engines of that displacement offered from 1968 until 2000. From the mid-1970s through the 1990s, the Windsor engine was also marinized for use in smaller recreational boats.
For the 1991 model year, Ford began phasing in their new 4.6/5.4 L Modular V8 engine, which was to replace the small-block Windsor. In 1996, Ford replaced the "5.0 L" (302 cu in) pushrod Windsor V8 with the Modular 4.6 L in the Mustang. Its use continued until 1997 in the F-150 pickup truck, until 2001 in the Explorer SUV, and until 2002 by Ford Australia in their Falcon and Fairlane cars.
The small-block engine that was identified as the Windsor engine was introduced in the 1962 Ford Fairlane. Displacing 221 cu in (3.6 L), it was designed to save weight, using thin-wall casting with a block that does not extend below the centerline of the crankshaft. The engine uses a separate aluminum timing chain cover, which differentiates it from the later 335-series Cleveland engines that use an integrated timing cover. All Windsor engines use two-valve-per-cylinder heads, with "2V" and "4V" designations indicating the number of barrels (or venturi) in the carburetor. The valves are in-line and use straight six-bolt valve covers. Coolant is routed into the block by the intake manifold.
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