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Vortec is a trademarked name for a line of gasoline engines for General Motors trucks. The name first appeared in an advertisement for the 1985 model year 4.3 L V6 that used "vortex technology" to create a vortex inside the combustion chamber , creating a better air / fuel atomization. [ 1 ]
The Vortec 7400 L29 7.4 L (454 cu in) V8 was a truck version of the Chevrolet big-block engine. Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100. Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100.
This was so named because it began with Chevrolet's V8 engines. Chevrolet big-block V8s; Chevrolet small-block V8s; 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 in 3 (1980-1983).
Both engines were replaced by a 7.4L V8 for 1999, which was replaced by a 8.1L Vortec V8 for 2001 (the largest-displacement V8 ever offered in a mass-produced Chevrolet). Coinciding with the retirement of the Caterpillar 3208 V8 and the Detroit Diesel 8.2L V8 diesel engines, the GMT530 introduced a 6.6L Caterpillar 3116 inline-6 turbodiesel ...
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 ...
For 1996, the four gasoline engines underwent a series of design upgrades, becoming the Vortec 4300, 5000, 5700, and 7400, respectively. [14] To meet OBD-II compliance, the Vortec engines replaced throttle-body fuel injection with sequential fuel injection, redesigned engine camshaft and cylinder heads, along with longer-life engine coolant and ...
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