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 ...

Unfortunately, until recently all you coulddowas imagine, for like most modern drivetrain products, the 700's design dates back to the late '70s, a dismal, depressing period when it was thought that ...

We're roundin' third on our maintenance kick on Truckin magazine's longest-running truck project. What started as simply knocking the dust off our '64 "GMC" to hit some cruises during the great ...

Retro-fitting modern, overdrive transmissions into early musclecars is nothing new, and with the rapid raise in gas prices (only two dollars a gallon as this is being written) the trend is sure to ...

Imagine a late-model, high-tech automatic 4-speed trans with a lower first gear (3.06:1) than the obsolete 2-speed Powerslide, or even the 3-speed TH-350 or TH-400. Imagine the effect of a high-gear ...