Guest Removed Posted January 30, 2010 Report Share Posted January 30, 2010 3550's,(aka tko's) have a 31 spline output shaft. and the base 3550, has a 10 spline input..the upgraded 3550, and tko 600's have a 26 spline input. 3650's are suppose to have a 31 spline output, and the t45 normally has a 28 output Quote Link to comment Share on other sites More sharing options...
Jeff1647545535 Posted January 30, 2010 Report Share Posted January 30, 2010 rob has this linked saved http://moderndriveline.com/Technical_Bits/tremec_t45.htm has the torque specs and gear ratios etc for all of them... Quote Link to comment Share on other sites More sharing options...
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