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Buick V8 engine
Like its sister General Motors divisions, Buick produced its own family of V8 engines to replace its straight-8 engines. Some of these engines had the same displacement numbers as those from other divisions, but were entirely different engines.
==Buick "Nailhead V8"==
Buick's first generation of V8 was offered from 1953 through 1956. It was an OHV/pushrod engine like the then new Oldsmobile "Rocket V8" engine. This engine became known as the "Nailhead" for the unusual vertical position of its small-sized valves, which were derisively compared to nails since their head diameter is smaller than other comparable displacement engines of the same era.〔(Vintage Buick Engines )〕 The Nailhead V8 family used a camshaft with greater lift and duration to offset the smaller-sized valves and arguably restrictive intake- and exhaust-port diamaters. The small-diameter intake runners allowed these engines to develop high torque, with many exceeding one foot-pound per cubic inch, which was exceptional for the day. All of the Nailhead designs have 4.750" Bore spacing.
NOTE: The Buick V-8 was originally called the "Nail Valve" by early hot rodders because the valves looked like nails since the stems were so long and the heads were small. At some point "Nail Valve" got replaced by "Nailhead."
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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