'64 K20 4x4 Clunk - What is it?

[JimQ]

Originally Posted by '63GENIII

My '63 is pretty jerky and makes alot of noise also. My gears are 4:10 and 4:11 front to rear or vice versa. It did it with the closed knuckle axle that was in it originally too and I guessed that it was normal. At this point, I've run my new axles for a few hundred in four hi and even though it makes noise (especially that damn T221!) it has yet to fail or act like it's getting worse. Sorry for I too have no advice for the closed knucks. It was easier to swap to the 44 hd (open knucks) for me.

So when you mention noise from the T221 do you mean gear whine or do you mean a sharp clunk/bind noise?

Is there anyone else that would say this might be "normal".

Thanks.

Q

['63GENIII]

Definitely talking about gear whine which is normal due to the straight cut gears. The clunking and binding is more of a front end "feature". I would not say that clunking from the t case is normal though.