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Starting around 1925 engine blocks and cylinder heads were now developed at each brand but were cast at Saginaw Metal Casting Operations. [3] In the mid-1960s, there were 8 separate families of GM V8 engines on sale in the USA. [4] [1] By the 1970s, GM began to see problems with their approach.
GM stopped installing big-block V8s in the Silverado HD trucks when the GMT800 series was discontinued in 2007. Vortec 8100s were built at GM's Tonawanda Engine plant while the engine block and cylinder head were cast at Saginaw Metal Casting Operations. The last L18 was manufactured in December 2009. L18 applications:
It offers the airflow of more expensive heads, at a much lower cost. It does, however, require a specific intake manifold (the L31 has four bolts per head attaching the intake manifold, as opposed to the "traditional" six bolts per head found on older Chevrolet small-blocks). Chevrolet's L31 was replaced by GM's LS-based 5.3L LM7 and 6.0L LQ4.
These engines vary in displacement between 2.8 and 3.4 litres (2,837 and 3,350 cc) and have a cast-iron block and either cast-iron or aluminum heads. Production of these engines began in 1980 and ended in 2005 in the U.S., with production continued in China until 2010. This engine family was the basis for the GM High Value engine family.
Like all other GM divisions, Olds continued building its own V8 engine family for decades, adopting the corporate Chevrolet 350 small-block and Cadillac Northstar engine only in the 1990s. All Oldsmobile V8s were assembled at plants in Lansing, Michigan while the engine block and cylinder heads were cast at Saginaw Metal Casting Operations .
The premier SD 421 cylinder head was the late 1962-early 1963 casting #9771980 aka "980", featuring a larger 185 cc (11.3 cu in) intake port volume, flowing 230 cu ft/min (6.5 m 3 /min) at 28 in (711 mm). The 421 HO (High Output) was introduced in 1964 as Pontiac's most powerful engine, replacing the 421SD as Pontiac had to discontinue their ...
This was so named because it began with Chevrolet's V8 engines. Chevrolet big-block V8s; Chevrolet small-block V8s; GM Vortec 4300 90° V6; GM Iron Duke RWD inline 4 (early RWD Variants, later versions may use a FWD pattern, and have two possible starter locations) Jeep with GM Iron Duke inline 4 2.5L/151 in 3 (1980-1983).
The 322 Fireball V8 in a 1956 Buick Century. Buick's first generation V8 was offered from 1953 through 1956; it replaced the Buick straight-eight.While officially called the "Fireball V8" [1] by Buick, it became known by enthusiasts as the "Nailhead" for the unusual vertical alignment of its small-sized valves (Originally it was known to hot-rodders as the "nail valve", because the engine's ...