The Full Form of SBF is‍ Small Block Ford.

The Ford Small Block (aka Windsor, Windsor V8, OHV V8, pushrod V8) is a series of automobile V8 engines built by the Ford Motor Company beginning in July 1961. The engine was discontinued in new trucks (F-Series) after 1996, and new SUVs (Explorer) after 2001, but remains available for purchase from Ford Performance Parts as a crate engine. Although sometimes called the “Windsor” family by enthusiasts, Ford itself never named the engine family; the designation was only adopted 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 designations of ‘Windsor’ and ‘Cleveland’ were derived from the locations of manufacture: Windsor, Ontario and Cleveland, Ohio.

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 (later marketed as 5.0 L), with engines of that displacement offered from 1968 until 2000. From the mid-1970s through the 1990s, the Ford Small Block engine was also marinized for use in smaller recreational boats.

For the 1991 model year, Ford began phasing in their new Modular V8 engine to replace the small-block, beginning with the Lincoln Town Car and continuing through the 1990s. The 2001 Explorer SUV was the last North American installation of the engine, and Ford Australia used it through 2002 in their Falcon and Fairlane cars.