So I have installed my overdrive manual trans in my 53. I have not driven it yet due to a a few starter parts on back order. Anyways I was pushing the car out of the garage today and I was hearing a clunk. It is in neutral. The od is not hooked up yet. I am just going to run it as a 3 speed for now. But anyways I’m hearing a clunk. And I’m really worried there’s something wrong with the trans. So I jack it up and spin the driveshaft by hand and I can hear it’s coming from the tail-shaft. This is really freaking me out. What can this be? Sent from my iPhone using H.A.M.B.