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The Iron Duke Pontiac engine VIN code A (also called the 2500, 151, Pontiac 2.5, and Tech IV, though the decal on the air filter assemblies actually reads "4 Tech") is a 2.5 L (150.8 cu in) I4 piston engine. All Iron Dukes were built by Pontiac beginning in 1977 and ending in 1993. After this time, the GM 2.2 L OHV 4-cylinder replaced it across the entire lineup of vehicles that offered it. This engine is not to be confused with the Chevrolet 153. Early Iron Dukes had a Chevrolet V8 bellhousing (also shared with its third generation inline six) instead of the Buick-Oldsmobile-Pontiac bellhousing bolt pattern until the early 1980s when the later versions were installed in FWD applications where the 2.8L bellhousing bolt pattern was phased in. Cylinder head design had the intake manifold mounted on the passenger side, and the exhaust manifold on the driver side. This 151 was also used by American Motors (AMC) starting in 1980, as the base engine option in the RWD Spirit and Concord, and continuing in both cars through 1982. The AWD (4x4) Eagle carried the 151 as standard equipment for 1981, and carried it midway through the 1983 model year. It was also available (as the ''Hurricane'') in economy model Jeep CJs. AMC replaced the Iron Duke 2.5L I4 with a 150cid Inline-4 derived from their own six. Applications: * 1977 Pontiac Astre * 1977-1979 Pontiac Phoenix * 1977–1980 Pontiac Sunbird * 1978–1980 Chevrolet Monza, Oldsmobile Starfire * 1980–1982 AMC Concord * 1980–1982 AMC Spirit * 1980–1983 Jeep CJ * 1980–1984 Oldsmobile Omega, Pontiac Phoenix * 1980–1985 Buick Skylark, Chevrolet Citation * 1981–1983 AMC Eagle * 1982–1984 Chevrolet Camaro, Pontiac Firebird * 1982–1989 Chevrolet Celebrity * 1982–1991 Pontiac 6000 * 1982–1992 Buick Century, Oldsmobile Cutlass Ciera * 1984–1988 Pontiac Fiero * 1985–1987 Chevrolet S-10 Blazer, GMC S-15 Jimmy * 1985–1993 Chevrolet S-10, GMC S-15/Sonoma * 1985–1990 Chevrolet Astro, GMC Safari * 1985–1987 Buick Somerset * 1985–1991 Pontiac Grand Am, Oldsmobile Cutlass Calais * 1986–1991 Buick Skylark * 1987–1994 Grumman LLV (USPS delivery vehicle) * 1990–1992 Chevrolet Lumina ==LS6== The LS6 was a 151 cu in (2.5 L) I4 engine produced from 1978 to 1979. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Iron Duke engine」の詳細全文を読む スポンサード リンク
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