Tremec T56

The T-56 six speed manual transmission has been used in a wide range of vehicles from General Motors, Dodge, and Ford Motor Company. The transmission was originally designed and built by Borg-Warner for the Dodge Viper later being used by GM in 1992 for the generation II and later engines, but as of 1998, is built by Tremec, though nothing changed internally. The T-56 has been succeeded by the Tremec TR-6060 transmission in many former T-56 applications, as well as applications requiring greater strength than the T-56 could offer.

Applications

• Aston Martin DB7 Vantage, 1999–2003
• Aston Martin V12 Vanquish, 2001–2006
• Chevrolet Corvette, 1997–2007
• Dodge Ram SRT10, 2004–2006
• Dodge Viper, 1992–2007
• Ford Mustang Cobra, 2003–2004
• Ford Mustang Cobra R, 2000
• Ford Falcon XR6, XR6T, XR8, F6 Tornado/Typhoon, GT/GT-P 2004–2008
• General Motors GM F platform V8 cars, 1993–2002
• Holden Commodore 1998–2008
• Holden Monaro, 2001-2006
• GM M12
  • 2001–2004 Chevrolet Corvette Z06
  • 2004–2006 Pontiac GTO
  • 2004–2006 Cadillac CTS-V
• GM MN6
  • 2004–2007 Chevrolet Corvette
• GM M10
  • 2005–2006 Chevrolet SSR
  • 2006–2008 Holden VE Commodore
• GM MZ6
  • 2005–2007 Chevrolet Corvette Z51

Features

The transmission uses a hydraulic clutch, except for the Cobra which is mechanical and had an 11 inch clutch disk. The entire case, including the bell housing, is made of aluminum. The T-56 has a synchromesh made up of brass synchros for the GM and Ford applications, and stainless steel in the Dodge application. The transmission also features internal stops which render stopbolts on the shifter mechanism unnecessary.

Specifications

• 26-spline input shaft (GM)
• 26-spline input shaft (Dodge)
• 10-spline input shaft (Ford)
• 400 lb·ft (542 N·m) torque capacity (1993 F-Body)
• 450 lb·ft (610 N·m) torque capacity (GM, except 1993 F-Body)
• 600 lb·ft (813 N·m) torque capacity (Dodge)
• 385 lb·ft (522 N·m) (GM MM6)
• 400 lb·ft (542 N·m) (GM M12)

See also

• GM LT engine
• Borg-Warner T-5 transmission
• Tremec TR-6060 transmission

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