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The first Y-block on Ford automobiles and F100 trucks was the 239 cu in (3,910 cc) version as released in 1954 with EBU casting numbers. The Y-block was the same displacement as the old Ford Flathead V8 that it replaced but with a bigger bore and a shorter stroke (3.5 x 3.1 in).
The FE and FT engines are medium block [citation needed] designs, referred to as Y-block because the cylinder block casting extends below the crankshaft centerline, [citation needed] giving great rigidity and support to the crankshaft's main bearings. In these engines, the casting extends 3.625 in (92.1 mm) below the crankshaft centerline ...
The first-generation Y-block was the 317 cu in (5.2 L), which replaced the undersquare 337 cu in (5.5 L) flathead V8 on all Lincolns in the 1952 model year and was produced through 1954. [2] The 317 was oversquare, as was rapidly becoming the fashion, with a bore of 3.80 in (96.5 mm) and a stroke of 3.5 in (88.9 mm).
Note: this is commonly called the Ford Small-block V8 pattern, though it is used in some "big block"-sized V8's as well as some V6's and I6's. 200 I6 1978-1983 only, partial (4 of 6 bolts) pattern. 250 I6 (except Australian 250/4.1) 255 V8; 289 V8 - (made after August 3, 1964) - had 6 bolts holding bellhousing to block; 302 Cleveland (Australia)
The second generation was a newly designed inline-six, produced from 1952 through 1964; it shared many parts with Ford Y-blocks such as the entire valve train and the problems associated with the Y-block's lubrication system. These engines have the exhaust and intake on the driver's side and the distributor on the passenger side.
The Ford flathead V8 was licensed to other producers. It was used by Simca in France until 1961 and in Brazil until 1964 for cars and until 1990 in the Simca Unic Marmon Bocquet military truck. [6] In the United States, the flathead V8 was replaced by the more modern overhead-valve Ford Y-block engine in 1954.
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Introduced in 1958, the Super Duty engines replaced the Lincoln Y-block V8 (alongside the smaller Ford MEL V8 engines). By the end of the 1970s, the use of the Super Duty engine began to decline in heavy trucks in favor of diesel-fueled engines; in medium-duty trucks, variants of the similar-displacement (but higher-efficiency) 385-series V8s ...