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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.
GMC replaced the Pontiac 223 with their own 228-cubic-inch (3.7 L) 228 in 1939. This OHV (overhead valve) engine was produced through 1953. With a cylinder bore of 3.5625 inches (90.49 mm), this is the smallest low-deck engine. All four low-deck engines have a stroke of 3.8125 inches (96.84 mm) and used 7 inch long connecting rods.
The standard engine for the C3500HD was the 5.7 L V8 with the 7.4 L V8 as an option; the 6.5 L turbodiesel was introduced as an option for 1992. [12] The engines were paired to the 4L80E 4-speed OD automatic and the NV4500 5-speed manual transmissions, the latter being the sole transmission option for the 5.7 L V8.
The GMT800 was a General Motors full-size truck platform used from the 1999 through 2009 model years. It is the foundation for the Chevrolet Silverado and GMC Sierra pickups; and the derivative GMT820 and GMT830 versions for the Chevrolet Tahoe/GMC Yukon and the Chevrolet Suburban/GMC Yukon XL full-size SUVs, respectively.
Designed for longitudinal engine configurations, ... 1993–2004; GMC Suburban 1500, 1993–1999; GMC Yukon, 1992–2009; GMC Yukon XL 1500, 2000–2008;
The system adjusts both intake and exhaust timing between two settings. This engine produces 403 hp (301 kW) and 417 lb⋅ft (565 N⋅m) in the GMC Yukon Denali/XL Denali, GMC Sierra Denali, Hummer H2, and briefly in the Chevrolet Tahoe LTZ (MY 2008.5 – MY 2009) and rated at 403 hp (301 kW) and 415 lb⋅ft (563 N⋅m).
The engines were also sold for marine and stationary applications. 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 ...
From the 1992 model year, GMC's full-size Jimmy had become the "Yukon", and so, the S-15 prefix was dropped on the smaller GMC Jimmy. Starting with the 1995 second generation, the large Blazer was rebranded as the Chevrolet Tahoe , and these mid-size SUVs were simply launched as the "all-new Chevrolet Blazer ".