General Motors developed the 700R4 series gearboxes for use with the 1982 Corvette. These editions were derivatives of the classic turbo hydra-matic builds used since the 1960s. It is possible to purchase post 1980 units in rebuilt condition from respected dealers. The Powertrain Pros company is one resource offering discounts for rebuilt 700R4 transmissions for sale for U.S. orders.
GM constructed its four-speed 700R4 series for use in more than one performance vehicle. These gearboxes are one of the few in automotive history that have been updated every few years. The overdrive capacity of the turbo hydra-matic was one of the competitors to the Ford AOD during the 1980s. The sister edition of the 700R4 is the 200R4 built for use in smaller GM produced vehicles.
2WD and 4WD Rebuilt General Motors TransmissionsThere is more to the size of the tail shaft when determining what type of gearbox is needed for replacement. Identifying a GM transmission is easy once a few key identifiers are used. Replacing a high mileage 700R4 is possible at a low cost. The good part about the construction of this unit is the consistent upgrades that have been added. The name change in 1993 to the 4L60 series made it easier to identify the base level gearboxes.
PowerTrainPros.com sells all of the builds that have been released through the past three decades by GM. Because the 700R4 four-speed gearboxes work with multiple cars, it is relatively simple to locate an exact match. Apart from the unique number system, any person purchasing a transmission replacement can use this created list of GM produced vehicles as a reference. Builds for the following vehicles can be purchased here:
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