The Brazilian version of the GMT400 – the Brazilian Chevrolet Silverado – is powered with a 4.1 instead of the Vortec 4300 V6.
It was already used in light trucks as the A and Chevrolet Veraneio. It was used in the Chevrolet Opala from 1969 (230) to 1992 (250). Overseas, the engine was also mass-produced in Brazil. : 881 Sidenote: the base six cost about US$334 less than a V8, and weighed some 188 lb (85 kg) less. However, when the B-body line was downsized in 1977 the engine was reintroduced. A 153-cubic-inch (2.5 L) inline-4 version of this engine was also offered in the Chevy II/Nova line through the 1970 model year.Īfter several years of steadily declining sales (just 3,900 units in the 1972 model year) : 881 the straight six was dropped from Chevrolet's full-sized cars for 1973, the first time the full-sized Chevrolet hadn't been available with a six-cylinder since 1928. : 341 Chevrolet and GMC trucks, which previously used the Stovebolt and GMC V6 engines also switched to using the Turbo-Thrift from 1963 through 1988, as did Pontiac in 19. Studebaker and Checker also began using the engine in 1965.
5.7 VORTEC INTAKE MANIFOLD SERIES
The first use of the new engine series was the 194 cu in (3.2 L) Hi-Thrift version in the 1962 Chevy II the following year, Chevrolet passenger cars adopted the 230 cu in (3.8 L) version across the range. Stamped ball-pivot stud-mounted rocker arms were introduced, similar to the V8, with a 1.75:1 ratio, rather than the earlier shaft-mounted 1.477:1 rockers.Wedge-type "closed chamber" cylinder heads with a "squish" area surrounding the combustion chamber cavity,.Stroke of the 194 and 230 engines is the same 3 + 1⁄ 4 in (82.6 mm) as the 327 small-block and 348 big-block V8s.Bore spacing matches the Chevrolet small-block V8's 4.4 inches,.
There were other major differences between the Turbo-Thrift engine and the Stovebolt: The new engine featured seven main bearings in lieu of the four bearing design of its predecessor, the "Stovebolt" engine, and was considerably smaller and approximately 100 lbs lighter. 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. The Chevrolet Turbo-Thrift engine is a straight-six produced from 1962 to 2001 by the Chevrolet Division of General Motors.
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