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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 ]
A rear wheel drive bellhousing is displayed at right, and the integrated front wheel drive bellhousing is displayed at the lower right (in this case, as a part of the GM 6T70 Transmission). GM 60-Degree 2.8/3.1/3.4/3.5/3.9 L V6 (also used by AMC) Buick 3300/3800 V6; Cadillac HT4100/4.5/4.9 L V8; Isuzu all 3.2 and 3.5L DOHC V6
It was the simplest, most basic 5.3L V8 of its family, lacking any special technologies. Also known as the Vortec 5300, the LH8 was available in the H3 and GM mid-size pickups through 2009. The LH8 is a variant of the 5.3L Gen IV small-block V8 modified to fit in the engine bay of the GMT345 SUV and GMT355 trucks.
This was Chevrolet's second 4.3L power plant; four other Chevrolet engines displaced 4.3L: the Vortec 4300 (a V6 based on the Chevrolet 350 cu in (5.7 L), with two cylinders removed), the original 265 cu in (4.3 L) V8 in 1954, a bored version of the stovebolt-era 235 inline six displacing 261 cu in (4.3 L), and a derivative of the Generation II ...
The truck was offered as a half-ton 1500 series with a Vortec 5.3L V8 producing 285 hp (216 kW) or as a three-quarter-ton 2500 series with a Vortec 8.1L V8 with 340 hp (253 kW) and the 4L85-E four-speed transmission. The base layout is rear-wheel drive, but there is an available with selectable high/low four-wheel drive. Avalanche 2500 models ...
Vortec 5300, replaced 5.7L V8 Flex-fuel capability standard from 2008 to 2014 (became optional for 2007) Available only on 1500 and light-duty 2500 vans; standard on 1500 passenger vans from 2007 to 2014 GM Generation IV small-block V8: 350 cu in (5.7 L) V8 Chevrolet small-block V8: 1996–2002 (L31) Vortec 5700, replaced by 5.3L V8 and 6.0L V8