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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 BorgWarner for the Dodge Viper later being used by GM in 1992 for the generation II and later engines, but from 1998 was 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.
 | This article relies largely or entirely on a single source. (April 2019) |
- Aston Martin DB7 Vantage, 1999–2003
- Aston Martin V12 Vanquish, 2001–2006
- Chevrolet Corvette, 1997–2007
- Chevrolet Camaro Z28/SS, 1993–2002
- Pontiac Firebird Formula/Trans Am,1993–2002
- Dodge Ram SRT10, 2004–2006
- Dodge Viper, 1992–2007
- Ford Mustang Cobra, 2003–2004
- Ford Mustang Cobra R, 2000
- Ford Falcon XR8, 2002-2005
- FPV F6 Tornado/Typhoon, GT/GT-P 2004–2008
- General Motors GM F platform V8 cars, 1993–2002
- Holden Commodore SV8/SS, 1994–2008
- Holden Monaro CV8, 2001–2006
- GM M12
- 2001–2004 Chevrolet Corvette Z06
- 2004–2006 Pontiac GTO
- 2004–2007 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
The transmission uses a hydraulic clutch, except for the Cobra which was mechanical. The Cobra had an 11-inch clutch disc. 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.
| Tag ID | Application | Torque Rating (lb.ft) | 1st | 2nd | 3rd | 4th | 5th | 6th | Rev | Input Splines | Output Splines |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1386-000-003 | 1992 Dodge Viper | 330 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 30 |
| 1386-000-005 | 1993–1995 Dodge Viper | 550 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 30 |
| 1386-000-006 | 1993 Camaro/Firebird w/2.73 final drive "M28" | 350 | 3.36:1 | 2.07:1 | 1.35:1 | 1.00:1 | 0.80:1 | 0.62:1 | 3.28:1 | 26 | 27 |
| 1386-000-007 | 1993 Camaro/Firebird w/3.23 final drive "M29" | 400 | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.80:1 | 0.62:1 | 3.28:1 | 26 | 27 |
| 1386-000-009 | 1994–1995 Camaro/Firebird | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| 1386-000-011 | GM Aftermarket | 450 | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.80:1 | 0.62:1 | 3.28:1 | 26 | 27 |
| 1386-000-012 | Mustang 5.0 Aftermarket | 450 | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.80:1 | 0.62:1 | 3.28:1 | 10 | 31 |
| 1386-000-013 | Holden | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| 1386-000-014 | 1996–2002 Dodge Viper | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 30 | |
| 1386-000-016 | 1996–1997 Camaro/Firebird | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| 1386-000-017 | 1998 Camaro/Firebird | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| 1386-000-018 | 1996–2002 Dodge Viper | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 30 |
| 1386-000-019 | 390 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | |||
| 1386-000-020 | 1999–2002 Camaro/Firebird | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| 1386-000-021 | Aston Martin | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.79:1 | 0.63:1 | 2.90:1 | 26 | 30 |
| 1386-000-022 | Holden Commodore | 350 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| 1386-000-023 | Corvette C5 | 375 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| 1386-000-024 | 375 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | |||
| 1386-000-025 | Corvette Z06 C5 | 385 | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.84:1 | 0.56:1 | 2.90:1 | 26 | 27 |
| TNET-1077 | 415 | 2.97:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | |||
| TNET-1247 | Dodge Viper | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 30 |
| TUET-1259 | 4.6 Mustang Aftermarket w/mech speedo | 450 | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.80:1 | 0.62:1 | 3.28:1 | 10 | 31 |
| TUET-1260 | 4.6 Mustang Aftermarket w/elec speedo | 450 | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.80:1 | 0.62:1 | 3.28:1 | 10 | 31 |
| TUET-1452 | Chevrolet Corvette | 370 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| TUET-1453 | Chevrolet Corvette | 370 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 27 |
| TUET-1576 | Aston Martin | 415 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.79:1 | 0.63:1 | 2.90:1 | 26 | 30 |
| TUET-1660 | 350 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 27 | ||
| TUET-1694 | 2003–2004 Mustang Cobra | 450 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.79:1 | 0.63:1 | 2.90:1 | 10 | 27 |
| TUET-1806 | Dodge Viper SRT-10 | 550 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 30 |
| TUET-2022 | Cadillac CTS-V | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.84:1 | 0.56:1 | 2.90:1 | |||
| TUET-2060 | Mustang Cobra | 450 | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.80:1 | 0.62:1 | 3.28:1 | 10 | 27 |
| TUET-2062 | Dodge Viper | 550 | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.74:1 | 0.50:1 | 2.90:1 | 26 | 30 |
| TUET-2066 | Pontiac GTO/Holden Monaro | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.84:1 | 0.56:1 | 2.90:1 | 26 | 27 | |
| TUET-5044 | Cadillac CTS-V | 2.97:1 | 2.07:1 | 1.43:1 | 1.00:1 | 0.84:1 | 0.56:1 | 2.90:1 | |||
| TUET-6450 | T-56 Ford N/A XR6 | 3.35:1 | 2.07:1 | 1.35:1 | 1.00:1 | 0.80:1 | 0.63:1 | 23 | 31 | ||
| TUET-7477 | T-56 Magnum Chevy Aftermarket | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.80:1 | 0.63:1 | 26 | 31 | ||
| TUET-7484 | T-56 Magnum Ford Aftermarket | 2.66:1 | 1.78:1 | 1.30:1 | 1.00:1 | 0.80:1 | 0.63:1 | 26 | 31 | ||
| TUET-8274 | T-56 Magnum Ford Aftermarket | 2.97:1 | 2.10:1 | 1.46:1 | 1.00:1 | 0.74:1 | 0.50:1 | 26 | 31 | ||
| TUET-8277 | T-56 Magnum Chevy Aftermarket | 2.97:1 | 2.10:1 | 1.46:1 | 1.00:1 | 0.74:1 | 0.50:1 | 26 | 31 |
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