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at 3350 rpm. This initial variant ran for 5 years, from its introduction in 1932 until the larger 257 was introduced in 1937. In 1933 the power was increased to 90
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and then to 100 hp in 1935 until its phasing out in 1937. 1933 also saw the introduction of removable "shell" bearings in lieu of the earlier "poured in place"
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at 3600 rpm, and 210 pound-feet of torque at 2000 rpm. This variant of the 8 cylinder Olds engine ran for 11 years. A later version of the engine raised
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mounted on the cylinder head whereas the later 257.1 engine has it mounted down on the left side of the engine. This series of engine was shared with the
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engine in the 1930s and 1940s. This was the company's top engine choice from 1932 until the 1949 introduction of the overhead valve
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This second variant of the
Oldsmobile straight-8 was 257 cubic inches (4.2 L). It was also a conventional
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during the 1934–1936 period, but its variant had a slightly increased capacity at 248 cubic inches.
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bearings. These early
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This first version of the
Oldsmobile straight-8 was 240.4
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at 3600 rpm, and 218 pound-feet of torque at 2000 rpm.
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187:which started off life in 1932 with 87
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183:(3.9 L). It was a conventional
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151:R. E. Olds Transportation Museum
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115:December 2009
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