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The 71 refers to 71 cubic inches of displacement per cylinder, nothing to do with the year

no. the old crackerbox gmc is a 60's vintage truck. 12v71 Detroit engine was not built or produced until the earily 70's hence the 71.

yes. GMC sold a fleet of Astros (COE) with the 12V-71 engine to a company in Alaska and the trucks were used during the construction of the Alaskan oil pipeline circa 1970

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13y ago

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