This is what happens to 3rd gear in a Hemi 18 spline 4-speed when you have too heavy of a car and too much power. My son's just broke two days ago. It has absolutely nothing to do with the clutch......
Old School nailed it. They don’t break as you shift third, they almost always break right before you pull 4th it seems like. No 2/3 bearing support, and look at how much the tooth actually engages. Cases flex, rpm and torque drive the two shafts apart. They’re 50 year old parts for Christ sake. We upgrade everything else then piss and moan about a trans. Good used DR4s are 2500, break an 18 spline twice and youve paid for it.
