The T-56 six-speed manual transmission has had a very interesting history. Originally made by BorgWarner and appearing first in the 1992 Dodge Viper with its special V10 engine, the T-56 showed up next in GM’s 1993 Firebird Trans Am and Camaro Z28 F-body pony cars — as an antidote to problems with the existing T-5 five-speed. The T-5 was small and easy to package in a variety of vehicles, but it was torque-limited to 330 lb-ft at a time when a new horsepower
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