page_title: GCR Class 8K
section_title: Great Central Railway
hierarchical_section_title: GCR Class 8K / Great Central Railway
caption_attribution_description: English: GCR Class 8K (LNER Class O4/1) loco at Langwith Junction engine shed on 7 August 1960
context_page_description: The Great Central Railway Class 8K 2-8-0 is a class of steam locomotive designed for heavy freight. Introduced in 1911, and designed by John G. Robinson, 126 were built for the GCR prior to the First World War. Including wartime construction for the British Army ROD and the post-war GCR Class 8M, the class and its derivatives totalled 666 locomotives.
context_section_description: The first of the 8K class was outshopped from the GCR's Gorton workshops in 1911. It was essentially a superheated version of an earlier 0-8-0, the 8A class, with the addition of a pony truck. This both supported the greater front end weight and gave a steadier ride. The 8K was introduced to anticipate the increased traffic from the GCR's vast new docks complex at Immingham in North East Lincolnshire and by June 1914 126 were in traffic. During the First World War there were experiments with oil burning 8Ks with larger bogie tenders.
  Post-war, a further 19 locomotives were built in 1918–21 to a modified design with a larger boiler (GCR class 8M). In 1922 the GCR rebuilt two Class 8M to Class 8K.
caption: GCR Class 8K (later LNER Class O4/1) loco 63664 at Langwith Junction engine shed on 7 August 1960
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