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This engine was unavailable in the CJ series until the introduction of the CJ-3B version in 1953, which had a distinctive high hood to accommodate the much taller engine. [2] Production of this engine continued through 1971, which was after American Motors Corporation (AMC) purchased Kaiser Jeep in 1970. Applications: 1950–1961 Willys Jeep Truck
The name was subsequently passed on to 4.0s in the other Jeep models that used the engine, the Cherokee and Wrangler. The cylinder head was again changed for the 2000 model year to a more emissions-friendly design. [citation needed] This head was designated as "0331" in the casting number. Early 0331 heads are prone to cracking, causing coolant ...
The engine was an odd-fire V6, meaning that TDC for the cylinders was not evenly spaced around the engine but grouped in pairs. The engines in Jeeps featured a heavier flywheel than the Buick version to help dampen vibrations resulting from the engine's firing pattern. The engine was known at the time for its power and reliability.
The AMC straight-4 engine is a 2.5 L straight-four engine developed by American Motors Corporation (AMC) that was used in a variety of AMC, Jeep, and Dodge vehicles from 1984 through 2002. The 2.5 L I4 Jeep engine shared design elements and some internal components with the AMC 4.0 L I6 that was introduced for the 1987 model year.
The Willys MB and the Ford GPW, both formally called the U.S. Army truck, 1 ⁄ 4 ‑ton, 4×4, command reconnaissance, [9] [10] commonly known as the Willys Jeep, [nb 5] Jeep, or jeep, [12] and sometimes referred to by its Standard Army vehicle supply nr. G-503, [nb 6] were highly successful American off-road capable, light military utility ...
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The engine was developed by Willys' Chief Engineer, Delmar "Barney" Roos, and was the most powerful of the three prototype vehicles evaluated by the U.S. Army for production. [4] Roos took the "less than impressive" 48 hp (36 kW; 49 PS) automobile engine and increased its performance and durability. [ 5 ]
Kaiser-Jeep switched to the Buick 350 in 1967 after AMC discontinued the 327. The Buick V8 engine option continued through 1971 after which Jeeps returned to AMC V8 engines, American Motors having purchased Jeep from Kaiser in 1970. There were low- and high-compression versions of the 327 starting in 1960. Prior to 1960, all 327s were high ...