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The Ford Boss 302 (formally the "302 H.O.") is a high-performance "small block" 302 cu in (4.9 L) V8 engine manufactured by Ford Motor Company.The original version of this engine was used in the 1969 and 1970 Boss 302 Mustangs and Cougar Eliminators and was constructed by attaching heads designed for the planned 351 Cleveland (which debuted the following year) to a Ford small block. [1]
The head castings and valve head sizes from 1969 to 1976 were different, notably in passages for air injection and spark plug diameters (1969–1974 18 mm, 1975 and up 14 mm). From 1977 onward, the 351W shared the same head casting as the 302, differing only in bolt hole diameters (7/16 inch for the 302, 1/2 inch for the 351W).
A higher performance variant of the Coyote, dubbed Road Runner internally by Ford, is produced under the Boss 302 moniker used for the resurrected Boss 302 Mustang for the 2012 model year. [20] The Boss 302 receives CNC ported heads cast in 356 aluminum providing additional airflow and strength, and a higher lift exhaust camshaft profile is used.
The first design was the Model 30 which had 4 exhaust ports and one intake port all on the right side of the head. The Model 31 had two intakes on the right and four exhaust on the left. The Model 35C, first known as the "Improved Rajo Valve-in-Head" and later as the Model C had two intakes and three exhausts on the right.
2012–present; The 3.2 is an I5 engine used in the Ford Transit, the Ford Ranger, Ford Everest, Mazda BT-50 and the Vivarail. For the North American-spec Transit, * the 3.2 L Duratorq is modified to meet American and Canadian emissions standards and is branded as a Power Stroke engine.
The Ford 400 engine was based on the 351 Cleveland but had a half-inch longer stroke than the 351 Cleveland. The 400 had "square" proportions, with a 4.0 in (102 mm) bore and stroke. Ford called the engine a "400" but in actuality it displaced 402.1 cu in (6.6 L; 6,590 cc). To accommodate the longer stroke, Ford engineers increased the block ...