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 ...

Before you begin, it is important to note that this valve body kit does not fit in pre-1987 700R4 transmissions. A simple way to test for the proper year transmission is to check and see if your ...

The 700R4's 30 percent overdrive ratio of 0.69:1 was a notable improvement from the TH350's direct-drive third gear, allowing the new transmission to keep rpm down while cruising on the interstate ...

Gear Star Performance Transmissions' has developed a "Fail Safe" Maximum Pressure Valve Body System for 700-R4 and 200-4R transmissions which automatically reverts to high pressure in the event of ...