Overview of the 700R4 Transmission - Gearstar Performance
https://gearstar.com/overview-700r4-transmission
WEBNov 19, 2019 · The 700R4, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission that was launched by General Motors in the early 1980s. It is an upgrade to the 3-speed TH350 automatic transmission and older models of rear-wheel-drive cars. Also, the 700R4 transmission featured a 30% overdrive in 4th gear which brought about fuel …
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