Lincoln Y-block V8 engine

The Lincoln Y-block V8 engine was Ford's earliest OHV V8 engine, introduced by Lincoln in the 1952 model year.

The Y-block's development was in response to the sales success of the competing Oldsmobile "Rocket" and Cadillac OHV V8 engines, introduced in the 1949 model year, the Buick "Nailhead" engine introduced in the 1953 model year, and the OHV V8 Chrysler Hemi engine in 1951. Also, Ford needed larger and more powerful truck engines. The basic engine design was produced through 1963. It was replaced by the newer MEL engine for car applications in 1958,

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The version of the Lincoln Y-block was used for heavy-duty truck applications from the 1956 through the 1963 model year. The engine was optional equipment on the Ford T-700 Series and standard equipment on the Ford F-750, C-750, and B-750 Series heavy-duty trucks. The 317 was oversquare, as was rapidly becoming the fashion, with a bore of and a stroke of .