| Lincoln Y-block V8 | |
| Manufacturer: | Ford Motor Company |
| Production: | 1952-1963 |
| Predecessor: | Flathead V8 |
| Successor: | Ford MEL V8 Ford Super Duty engine |
| Configuration: | Big-block[1] V8 |
| Valvetrain: | OHV 2 valves x cyl. |
| Fueltype: | Gasoline |
| Fuelsystem: | Holley 4-bbl. carburetor |
| Coolingsystem: | Water-cooled |
| Displacement: | 2791NaN1 3021NaN1 3171NaN1 3321NaN1 3411NaN1 3681NaN1 |
| Bore: | 3.5621NaN1 NaN1NaN1 3.81NaN1 3.941NaN1 41NaN1 |
| Stroke: | NaN1NaN1 3.661NaN1 |
| Power: | NaN0NaN0 |
| Torque: | NaN0NaN0 |
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.[2]
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.[3] It was replaced by the newer MEL engine for car applications in 1958, and was replaced in heavy-duty truck applications by the FT (330/361/391) engines starting in 1964.
A 2791NaN1 version of the Lincoln Y-block was produced for heavy-duty truck applications for the 1952 through 1955 model years.[3] The engine had a bore of 3.56251NaN1 and a stroke of 3.51NaN1.[3] [4] [5]
The 3021NaN1 version of the Lincoln Y-block was used for heavy-duty truck applications from the 1956 through the 1963 model year.[3] The engine had a bore of 3.6251NaN1 and a stroke of 3.656251NaN1.[3] [4] [5] Power output was 1960NaN0.[6] 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.[6]
The first-generation Y-block was the 3171NaN1, which replaced the undersquare 3371NaN1 flathead V8 on all Lincolns in the 1952 model year and was produced through 1954.[7] The 317 was oversquare, as was rapidly becoming the fashion, with a bore of 3.81NaN1 and a stroke of 3.51NaN1.[2] [3] [4] [5] Power output with a two-barrel carburetor was 1600NaN0. Higher compression, larger intake valves, a Holley four-barrel, improved intake and exhaust, and a more aggressive camshaft, the next year increased it all the way to 2050NaN0.[2] The engine was unchanged in 1954 except for the vacuum advance mechanism.[2] These engines used hydraulic valve lifters while Ford truck engines used solid. The stock Lincoln 317 powered the "Mexican Road Race Lincolns". The 317 was replaced by the 341 for automobile applications in the 1955 model year.[7] Like the 279, the 317 was also used in heavy-duty truck applications for the 1952-55 model years .[3]
Lincolns powered by the 317 won the top four spots in the Stock Car category of the Pan American Road Race in both 1952 and 1953.[7] In 1954 Lincolns took first and second place.[7]
The 3321NaN1 version of the Lincoln Y-block was used for heavy-duty truck applications from the 1956 through the 1963 model year.[3] The engine had a bore of 3.81NaN1 and a stroke of 3.656251NaN1[3] [4] [5] and produced 2120NaN0.[6] The engine was standard equipment on the Ford F-800, F-900, T-750, T-800, C-800, and C-900 Series heavy-duty trucks.[6]
The 3171NaN1 automobile engine was bored out in 1955 to 3.941NaN1, displacing 3411NaN1.[2] [3] [4] [5] Power was up to 2250NaN0 and torque 4500NaN0.[2] in its sole year of production.[7]
In the 1956 model year the 341's bore was increased to 41NaN1 and stroke to 3.656251NaN1 to create a 3681NaN1 engine[2] [3] [4] [5] that produced 2850NaN0 and 5450NaN0.[2] In 1957 horsepower increased to 3000NaN0 with 5630NaN0 of torque but the Lincoln still lagged in horsepower and torque behind the Chrysler Hemi 392 used on the Imperial, Chrysler New Yorker, and 300C, and in horsepower behind the 3-2bbl version of the Cadillac 365 used on the Eldorado.[2] The 368 was standard equipment on all Lincolns in the 1956 and 1957 model years,[7] and standard on the Mercury Turnpike Cruiser and Colony Park and optional on the Mercury Montclair, Monterey, Voyager, and Commuter[7] in 1957, its final year.
| Displacement | Bore | Stroke | Power | Torque | Years | Usage |
|---|---|---|---|---|---|---|
| 279 | NaN1NaN1 | NaN1NaN1 | 1520NaN0 | 2460NaN0 | 1952-1955 | Ford heavy duty trucks |
| 302 | NaN1NaN1 | NaN1NaN1 | 1960NaN0 | 1956-1963 | Ford heavy duty trucks | |
| 317 | NaN1NaN1 | NaN1NaN1 | 160- | 284- | 1952-1955 | Lincoln and Ford HD trucks |
| 332 | NaN1NaN1 | NaN1NaN1 | 2120NaN0 | 1956-1963 | Ford heavy duty trucks | |
| 341 | NaN1NaN1 | NaN1NaN1 | 2250NaN0 | 3320NaN0 | 1955 | Lincoln |
| 368 | 41NaN1 | NaN1NaN1 | 285- | 402- | 1956-1957 | Lincoln and Mercury |