Toploader Transmission
Overview
 
A Toploader transmission is a manually shifted three and four speed gearbox introduced in 1964 by Ford Motor Company
Ford Motor Company
Ford Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...

 to replace the BorgWarner
BorgWarner
BorgWarner Inc. is a United States-based worldwide automotive industry components and parts supplier. It is primarily known for its powertrain products, which include manual and automatic transmissions and transmission components, , turbochargers, engine valve timing system...

 T-10. It was used in most Fords and Mercurys from 1964 until 1973 as well as some foreign models. Officially designated the 3.03 three speed or Ford design four speed, the Toploader got its name from the fact that the access plate to the inner workings was located on the top of the main case as opposed to the side, a convention used on most gearboxes such as the Ford Dagenham or GMs Saginaw or Muncie.
 
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