Editing General Motors transmissions (section)
Jump to:
navigation
,
search
===Borg Warner/Tremec T56=== Starting with the 1992-1993 GM F-body (Camaro, Firebird, Trans Am), the six speed was a Borg Warner-designed, Tremec-built T56 transmission. Although the basic design, case, and internal operation were the same, three different ratio gear sets were available in GM applications. In 1993, F-body cars were equipped with two optional rear axle ratios: 2.73 and 3.23. Beginning in 1994, all T56 cars used the same ratio gear set regardless of rear axle ratio. 1992-1993 T56 with the lower gear sets had a slightly lower torque capacity in the 350 lb-ft range while 1994-later (high) gear sets reduced the side loads on the case and were rated to 450 lb-ft. T56 use continued like this until 1997 when it also started being used in the Y-body (Corvette) as a rear-mounted transaxle, and continued on in F-bodies behind the LS1 until the end of their production. Of note is the fact that all T56 transmissions share an interchangeable main case; even those found in Holdens, Fords, Vipers, and Aston Martins. What differs is the front adapter plate, tail shaft housing, shifter, and input/output shafts. Internally, there were some interchangeable differences, like the type of shift forks and synchronizers used, but for the most part all T56 transmissions are built on the same stout center section. ====T56 general info==== {| class=wikitable !Tag ID !Application !Torque Rating !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||26||31 |- |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||31 |- |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||27 |- |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||||10||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||||10||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||27 |} ====T56 transmission ratios- 1993 F-body with 2.73:1 axle:==== *Reverse - 3.28 *First - 3.36 *Second - 2.07 *Third - 1.35 *Fourth - 1.00 *Fifth - 0.80 *Sixth - 0.62 ====T56 transmission ratios- 1993 F-body, 3.23:1 axle:==== *Reverse - 3.28 *First - 2.97 *Second - 2.07 *Third - 1.43 *Fourth - 1.00 *Fifth - 0.80 *Sixth - 0.62 ====T56 transmission ratios- 1994-current GM production:==== *Reverse - 2.90 *First - 2.66 *Second - 1.78 *Third - 1.30 *Fourth - 1.00 *Fifth - 0.74 *Sixth - 0.50 [[File:Tremec dimensions.jpg|thumb|400px|left|T56. Note the multiple options for shifter mounting positions.]] <br style="clear:both"/>
|
Editing help
(opens in new window)
Personal tools
Log in / create account
Namespaces
Page
Discussion
Variants
Views
Read
Edit
View history
Actions
Search
Navigation
Main Page
Recent changes
Random page
Help
All articles
Start a new article
Hotrodders forum
Categories
Best articles
Body and exterior
Brakes
Cooling
Electrical
Engine
Fasteners
Frame
Garage and shop
General hotrodding
Identification and decoding
Interior
Rearend
Safety
Steering
Suspension
Tires
Tools
Transmission
Troubleshooting
Wheels
Toolbox
What links here
Related changes
Special pages
Terms of Use
Copyright
Privacy Policy
Your Privacy Choices
Manage Consent