Lincoln Y-block V8 engine

Lincoln Y-block V8
Overview
Manufacturer	Ford Motor Company
Model years	1952-1963
Body and chassis
Class	Big-block OHV V8
Chronology
Predecessor	Flathead V8
Successor	Ford MEL V8 Ford Super Duty engine

The Lincoln Y-block V8 engine was Ford's earliest OHV V8 engine, introduced by Lincoln in the 1952 model year. Like the later and better-known but even more short-lived Ford Y-block engine, its block's deep skirts gave the block the appearance of the letter Y from the front.

Its development was in response to the sales success of the competing Oldsmobile "Rocket" and Cadillac OHV V8 engines introduced in their respective 1949 models, as well as the need for 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, and was gradually replaced in heavy-duty truck applications by the larger Ford Super Duty engine, which had also been introduced in 1958.

A 279 cu in (4.6 L) version of the Lincoln Y-block was introduced for heavy-duty truck applications for one year only during the 1954 model year. The engine had a bore of 3.562 in (90 mm) and a stroke of 3.500 in (89 mm).

The 302 cu in (4.9 L) version of the Lincoln Y-block was used for heavy-duty truck applications from the 1955 through the 1963 model year. The engine had a bore of 3.625 in (92 mm) and a stroke of 3.660 in (93 mm). Power output was 196 hp (146 kW). 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 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's. The 317 was oversquare, as was rapidly becoming the fashion, with a bore of 3.800 in (97 mm) and a stroke of 3.500 in (89 mm). Power output was 160 hp (119 kW); higher compression, larger intake valves, a Holley four-barrel carburetor, improved intake and exhaust, and a more aggressive camshaft the next year increased it to 205 hp (153 kW). The engine was unchanged in 1954 except for the vacuum advance mechanism. These engines used the same solid valve lifters as Ford truck engines, and were to power the "Mexican Road Race Lincolns". The 317 was replaced by the 341 for automobile applications in the 1955 model year. Like the 279, the 317 was also used in heavy-duty truck applications for the 1954 model year only.

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