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All engines in this family share the same block dimensions and sometimes even the same casting number; the latter meaning engines were of the same block, but with different strokes (e.g., the casting number 3970010 was used by all three engines: 302, 327, and 350). This engine family was updated in 1968 for the use of 2.45 in (62.2 mm) medium ...
Do not confuse with later AMC 2.5 L engine that uses GM small corporate pattern . Chevrolet Turbo-Thrift engine (post-1962) Chevrolet 153 Inline 4 (Chevy II, pre-Iron-Duke - includes the Vortec 3000/181 industrial/marine crate motor) Detroit Diesel V8 6.2L and 6.5L; Duramax V8; Generation III V8s with modifications. These modifications include ...
The Chevrolet small-block engine refers to one of the several gasoline-powered vehicle engines manufactured by General Motors. These include: The first or second generation of non-LS Chevrolet small-block engines; The third, fourth, or fifth generation of LS-based GM engines; The Chevrolet Gemini small-block engine
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 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 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. [2]
The engine is the first GM truck engine to feature an active thermal management system. This system consists of an electrically driven water pump and a 3-way rotary valve which allows the engine to maintain proper operating temperatures and quicker warm-ups.
The 4.3 L (262 cu in) V6 has a 4 in × 3.48 in (101.6 mm × 88.4 mm) bore and stroke, identical to the 350 cu in (5.7 L) Chevrolet V8 engine. To create a true even-fire engine, Chevrolet produced a crankshaft with 30-degree offsets between each rod pin. Consequently, rod journals were increased to a larger 2 + 1 ⁄ 4 inches (57.2 mm).
The Chevrolet Gemini small-block engine is a dual-overhead cam (DOHC) V8 engine designed by General Motors.While technically a small-block engine because of its bore spacing of 4.4 inches, [1] [2] General Motors engineers do not consider it to be a part of the traditional Chevrolet small block lineage because of the substantial reworking, specialized development, and unique technical features ...