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The Chevrolet 90° V6 family of V6 engines began in 1978 with the Chevrolet 200 cu in (3.3 L) as the base engine for the all new 1978 Chevrolet Malibu.The original engine family was phased out in early 2014, with its final use as the 4.3 L (262 cu in) V6 engine used in Chevrolet and GMC trucks and vans.
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 Iron Duke 4-cylinder and 2.8 L 60° V6 engines were discontinued, the 4.3 L Vortec V6 was enhanced, and a new 2.2 L 4-cylinder engine (which had been introduced in 1990 on various front-wheel-drive GM compact and mid-size platforms) became the engines of choice to power the second generation of S-10s.
A five-speed manual transmission remained standard through 1994, but only with the TBI engine. Only the two 4.3 L (262 cu in) engines were offered as options, the base TBI and the CPI (introduced in 1992 for the S-10/S-15 and Astro/Safari vans; the latter had the "Vortec" logo on the intake plenum).
At its 1988 launch, the fourth-generation C/K pickup trucks shared its five-engine powertrain offering with the R/V series. On 1500- and 2500-series vehicles, a 4.3 L Vortec V6 was standard, with the options of a 5.0 L V8, 5.7 L V8, and a 6.2 L diesel V8.
1992–1994 – 4.3 L L35 Vortec 4300 V6, CPFI, 200 hp (149 kW) (VIN W) Fuel economy.
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