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The Quad 4 is the first domestic regular production DOHC four-cylinder engine wholly designed and built by GM, the only similar prior example being the Chevrolet Cosworth Vega, whose DOHC head was designed by Cosworth in England. In addition to the 2.3-liter DOHC Quad 4s, there was also a short-lived 2.3-liter SOHC variant called the "Quad OHC ...
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.
Removed text: Many Quad 4 engines did not see over 120,000 miles (190,000 km) due to connecting rod issues [citation needed].The Quad 4 was plagued with blown headgasket issues almost from the introduction of the engine. The problems primarily arose from the fact that the cylinder head was built from aluminum and the block from cast iron, which ...
DETROIT (AP) — General Motors is recalling nearly 462,000 pickup trucks and big SUVs with diesel engines because the rear wheels can lock up, increasing the risk of a crash.. The recall in the U ...
Jeep with GM Iron Duke inline 4 2.5L/151 in 3 (1980-1983). These use a Chrysler custom Torqueflite 904 automatic transmission with an integral Chevrolet bellhousing. Do not confuse with later AMC 2.5 L engine that uses GM small corporate pattern . Chevrolet Turbo-Thrift engine (post-1962)
As of 1996 a new 4-speed automatic became available in any trim; this had originally been intended to be introduced along with the redesign but General Motors' cash shortage delayed it. [19] The Z24 and LS convertible used the 2.3 L LD2 Quad 4 engine in 1995, but they received a new engine in 1996, the 2.4 liter DOHC LD9. This engine could also ...
Recent problems at two large American companies were probably once just the tip of the iceberg. What can be seen appears small, but most of the issue lies below the water line, and if left alone ...
The GM Quad 4 multi-valve engine family debuted early 1987. The Quad 4 was the first mainstream multi-valve engine to be produced by GM after the Chevrolet Cosworth Vega. The NA Quad 4 achieved 1.08 bhp (1 kW; 1 PS) per cubic inch (49.1 kW/liter). [2] [20] Such engines soon became common as Japanese manufacturers adopted the multi-valve concept.