These T56 transmissions are in some of the auto world's top performers: Ford Mustang Cobra, Dodge Viper, and Aston Martin Vantage & Vanquish.
Shared Features450 ft/lbs torque capacityDie-cast aluminum housings reduce weightAdvanced synchronizersTapered roller bearings on shafts minimize noise and wearPowdered steel core blocker rings & engineered friction materialsPatented strut-type design for durabilityInternal, single-rail shift system8.13 pints of fluid requiredNeedle bearings under all speed gears improve high-speed performance & lessen shift effortTwo overdrives allow extended ratio coverage and closer gear ratiosConstant mesh synchronized Reverse
Ford Specs1-1/16" 10-spline input, 31-spline outputGear Ratios* 1st 2.97, 2nd 2.07, 3rd 1.43, 4th 1.00, 5th .80, 6th .62, Reverse 3.28
*Including GM part #957-1386000011
GM Specs1-1/8" 26-spline input, 27-spline outputGear Ratios** 1st 2.66, 2nd 1.78, 3rd 1.30, 4th 1.00, 5th .74, 6th .50, Reverse 2.90
**Except GM part #957-1386000011
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