Howdy all. I've got a conundrum. '54, 235, 3 speed, torque tube. Drive it all the time, ~30 mile commute mostly highways. A while ago, in town, pulling away from a stop sign, going uphill, KachunK. could still move, with KachunKs, got it to the side and towed it home. Thought I did something to the rearend. Pulled cover, looked it all over, looked good, ran through gears while in air, no problem. When holding brake while letting out clutch could feel start of KachunK. Not audible though.
Next step, removed torque tube from back of transmission. Victory is mine! One broke bolt in u-joint. Found head, able to unscrew broken shaft. Ordered new bolts and keepers, and replaced. Topped off all fluids.
Here's the problem. Now I have a vibration - fast frequency like a 'Hummm' that starts around 30 mph, and is most noticeable from 45-55 mph. pronounced enough that it vibrates the rearview mirror a lot. It definitely wasn't there before. Seems to be most pronounced when cruzing at constant speed. Acceleration and removing foot from gas reduces the volume, but it is still there. Put in clutch while cruzing, still there.
So, almighty Stovebolt brain trust, what do I do next?
Any help would be appreciated.
