The 700R4, also known as TH700R4, is a General Motors four-speed automatic transmission that was used from 1982 to 1993. Internally called a Hydra-Matic MD-8, it was used in front-engine/rear-drive and all-wheel drive cars and trucks. The 700R4 was used primarily in Chevrolet and GMC vehicles, but it could also be found in other GM brands that used engines sourced from Chevrolet. As a result, some Buicks, Pontiacs, Oldsmobiles, Cadillacs, and even Holdens used this transmission. The 700R4 replaced the
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