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The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a 151 cu in (2.5 L) straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 until 1993. Originally developed as Pontiac's new economy car engine, it was used in a wide variety of vehicles across GM's lineup in the 1980s as well as supplied ...
The 2.5 L also shared an 18mm threaded oil filter used with the GM 2.8 L (ACDelco PF47 or equivalent) through 1986, when the 4.0 L was phased into production with the XJ models, the oil filter was changed over to a 20mm thread size shared with Renaults until 1991. The AMC I4 first appeared in 1984 model year with the new XJ Cherokee. In 1986 ...
Atlas is a name for a family of modern inline piston engines for trucks from General Motors, used in the GMT355 and GMT360 platforms. The series debuted in 2002 with the Oldsmobile Bravada, and is also used in the Buick Rainier, the Chevrolet TrailBlazer and Colorado, the GMC Envoy and Canyon, the Hummer H3, Isuzu Ascender and i-370, and the Saab 9-7X.
The Duramax I4 engine is a family of turbocharged diesel I4 engines sold by General Motors in 2.5 and 2.8 liter sizes as an option for the Chevrolet Colorado, GMC Canyon, Chevrolet Express, and GMC Savana in southeast Asia and Oceania (Australia / New Zealand) from 2012, and in North America from 2016 through 2022.
In a 1938 reorganization, Winton Engine Corporation became the GM Cleveland Diesel Engine Division, and GM's Detroit Diesel Engine Division began production of smaller (50–149 cu in (0.8–2.4 L) per cylinder) diesel engines. Locomotive engines were moved under the GM Electro Motive Division (EMD) in 1941, while Cleveland Diesel retained ...
This early version used a Chevrolet small block V8 bell housing bolt pattern. The 1984 and later model GM 151s used the corporate GM four-cylinder/small V6 bolt pattern (not used by AMC). Bore × Stroke 4.00" × 3.00" Compression Ratio 8.2:1; Horsepower (net) 82 hp (61 kW) @ 4,000 rpm; Torque (net) 125 lb⋅ft (169 N⋅m) @ 2,600 rpm
The engine was discontinued in 2003, replaced by the 2.2 L DOHC Ecotec engine. Although it displaces 134 cu. in, the 2.2 L OHV is still commonly referred to as the GM 122 today, and has been reputed for its simplicity, reliability, and ease of maintenance in the J-body cars and S-series trucks, and a few L-body cars.
GM Vortec 4300 90° V6; GM Iron Duke RWD inline 4 (early RWD Variants, later versions may use a FWD pattern, and have two possible starter locations) Jeep with GM Iron Duke inline 4 2.5L/151 in³ (1980-1983). These use a Chrysler custom Torqueflite 904 automatic transmission with an integral Chevrolet bellhousing.