Just wondering if anyone here has had any problems with the input shaft bearing failing on their Tremec T-56 tranny. I read that they are rated to 450 ft./lbs. of torque. I make 500 at the wheel and I know some of you guys make alot more than that. Any helpful insight is appreciated.

 

I've never heard of ISB failures.. only problems I've heard of with cobras is the stock 10 spline input shaft snapping, and possible the TOB retainer sleave coming loose, or in extreme cases snapping the output shaft.


I have not put mine through much torture since the 26 spline and mcleod street twin, but it seems to be holding up fine. When I put the 26 spline in the old input shaft bearing looked pristine (till I fucked it up when I pulled it off )

 

I've heard of that too. It just seems like the ISB is going out. I need to take a trip down to the dealer and get it checked out....soon.