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The Vortec 7400 L21 was a commercial version of the Chevrolet big-block engine used in the medium duty truck platform. Its design shared much with the L29 454, but with the addition of forged pistons and crankshaft, and coil near plug ignition. It had slightly reduced power compared to the L29 454 and used a different PCM.
Pumping the brakes" is strongly discouraged during an unintended acceleration event, as this can lead to a loss of braking power. [74] It is also strongly recommended not to shut off the engine, which disables all control including the steering wheel. [75] Unresponsive (entrapped) pedals can be avoided by using car mat clips. [76]
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 ...
1990 454 SS. For 1990, Chevrolet debuted the 454 SS as a high-performance variant of the C1500. The newest American high-performance pickup truck since the 1989 Shelby Dakota, the 454 SS was a 1 ⁄ 2-ton C1500 powered by a 230 hp (172 kW) 7.4 L V8.
Dieseling or engine run-on is a condition that can occur in spark-plug-ignited, gasoline-powered internal combustion engines, whereby the engine keeps running for a short period after being turned off, drawing fuel through the carburetor, into the engine and igniting it without a spark.
The advent of concern about fuel economy and emissions had major impacts on engine design. Some of the trade-offs reduced throttle response. Most new cars employ a drive-by-wire system, which includes electronic throttle control and can itself either reduce or increase throttle response (Depending on whether or not it's being employed on a performance car).
The Chevrolet Turbo-Thrift engine is a straight-six produced from 1962 to 2001 by the Chevrolet division of General Motors. The entire series of engines was commonly called Turbo-Thrift , although the name was first used on the 230 cubic inch version that debuted in 1963. [ 1 ]
The 5.7-liter petrol engine is LPG-compatible, and such systems can be retrofitted if desired. Regardless of the engine specified, the truck was equipped with a four-speed automatic transmission. However, what differed was the type of transmission. Petrol motors were fitted with the GM 4L60-E transmission, with the GM 4L80-E reserved for the ...