Tremec T5 Transmission  : TKO 500  : TKO 600  : Tremec 3550  : Tremec T45  : Tremec T56 


Tremec 3550 Transmissions

The Tremec 3550 5 speed transmission was replaced with the stronger and smoother shifting Tremec TKO line of 5 speed transmissions. Tremec 3550’s are most common amongst the Mustang crowd as they found their way into a few Cobra Mustangs. Their higher torque engines demanded a stronger 5 speed transmission.

  • Five forward speeds with 5th gear overdrive provides extended ratio coverage, lowering engine RPM’s and improving fuel economy. (Available in .68 or .82 overdrive ratio)
  • Tapered roller bearings on input, output and counter shafts increase torque capacity.
  • Massive 83 mm center distance from mainshaft to countershaft allows for the largest most durable gear sizes.
  • Specially designed aluminum die cast housings provides optimum strength-to-weight ratio.
  • Steel input shaft retainer enhances durability.
  • TKO models are offered with upgraded steel on select gearing, delivering maximum torque capacity.
  • Internal multi-rail shift linkage system provides robust, positive shifting.
  • Fifth speed synchronizer located on countershaft reduces gear rattle and shift effort.
  • Multiple shift lever locations available:
    • Rear - standard on all TR-3550 transmissions - ideal for Mustang applications
    • Mid-shift location - ideal for pick-up truck retrofits
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    • Front-shift location - allows retrofits of custom-made cars and other Hot-Rod applications


Tremec Transmissions

Trans info