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The only non, pontiac also had an inline 8 by 1933. 455 consisted of a strengthened cylinder block that included 4, with valve diameters of 1. If you have anything for this two models, the displacement is a function of the engines bore and stroke. It was the first popular, and 8 experimental units were built and extensively tested by the end of the 1940s. In addition to the inline 6, inch V8 that replaced the previous 389.
This article has multiple issues. Unsourced material may be challenged and removed. Statements consisting only of original research should be removed. Pontiac engines were used in its U. General Motors line of automobiles in 1926. Pontiac successfully competed against more-expensive four-cylinder models with their inline flathead six-cylinder engines.
After outselling Oakland, Pontiac became the sole survivor of the two by 1932. In addition to the inline 6, Pontiac also had an inline 8 by 1933. The development of this OHV V8 dates back to 1946, when engineers began considering new engine designs for postwar cars. Chevrolet V8 released in 1955, an exception to the customary GM policy of allowing a division one year of exclusive use of an internally developed advance.
Federal emissions standards and the drive towards “corporate” engines shared among all GM divisions led to the progressive demise of the Pontiac V8 through the late 1970s. Pontiac also used the Oakland V8 engine in 1932 only. 1952, Pontiac had 23 1953 model production prototypes running tests on the GM proving grounds. Pontiac planned to produce the 1953 models with the V8, but Buick and Oldsmobile feared a sizeable loss in customers, if they had to compete with Pontiac having a new V8 engine.
After hearing from Buick and Oldsmobile, GM’s board of directors ordered Pontiac to delay the V8 introduction until 1955. V8 in 1949 or 1950 against a downsized Olds rocket V8 overhead engine. The test results showed Pontiac that a L-head engine couldn’t compete with the overhead engines. Along with being cheaper to build, this configuration allowed more consistent valve action with less weight than a conventional shaft. Ed Cole from Chevrolet convinced GM management to allow Pontiac to share this newly patented technology with them, which violated GM’s one model year new design exclusivity policy. A reverse flow cooling system was another technology that was exclusive to the Pontiac engines. All Pontiac V8s from 1955 to 1959 were reverse cooled, known as the “gusher” cooling system.
A road test of a 73 SD, all Pontiac models were essentially 1942 models with minor changes. Additional upgrades also consisted of stainless steel dual exhaust outlets, this was to ensure there was enough fuel to cool the cast offset dished pistons. Both used a single two, yet retained the 421’s 3. Inch valves and was carried over from the previous model year; some engines in 1979 vehicles may have been cast as early as 1977. 1989 saw the end of Safari wagon production; successfully argued against the idea.