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TREMEC® T-56 MAGNUM 6-Speed transmission

T-56 Magnum 6-speed transmission


Introduced in the spring of 2009, the TREMEC T-56 Magnum 6-speed manual transmission, was the long awaited and highly anticipated replacement for the original T-56.

Based heavily on the TR-6060, the all-new Magnum took the best of TREMEC’s current OEM design and manufacturing technologies and combined them with the most popular features of their intensely popular TKO 5-speed. The result is the smoothest shifting, greatest driving, strongest and most versatile 6-speed aftermarket transmission TREMEC has ever produced.


Features & Benefits:

  • 85mm center distance.
  • 700 lb-ft effective torque capacity.
  • Fully reversible ‘TKO-style’ OEM-grade die-cast aluminum shifter for smooth, positive shift action.
  • Dual ‘speedo’ pick ups to accommodate both electric and mechanical type speedometers.
  • Built-in mid-shift provisions under inspection cover for simple, pain free mid-shift conversions.
  • Triple cone synchronizers on gears 1-4, double cone synchronizers on gears 5-6, as well as reverse.
  • Accurate, smooth, high-rpm shift capabilities.
  • 26 Spline input shaft
  • 31 Spline output shaft


Part Number
Application Torque Cap.
Gear Ratio Chart
1st 2nd 3rd 4th 5th 6th Rev
TUET11009 GM 700 2.66 1.78 1.30 1.00 0.80 0.64 2.90
TUET11012 GM 700 2.97 2.10 1.46 1.00 0.74 0.50 2.90
TUET11010 Ford 700 2.66 1.78 1.30 1.00 0.8 0.64 2.90
TUET11011 Ford 700 2.97 2.10 1.46 1.00 0.74 0.50 2.90



See How the TREMEC T-56 Magnum 6-speed Transmission is improved.     




T-45    T-5    TKO    TR-3550    TR-3650

T-56    T-56 Magnum    S-197 Magnum