904 / New Converter, abnormal noise

transman said
99% of the bushings I sold in the past were Babbitt. I also believe that the original bushings were Babbitt lined, although I might stand corrected. Trailbeast or Rusty should be able to confirm or deny that.

transman said
Thanks Kim, I thought so. As I recall, about the only time we were asked for bronze bushings were from some High Performance guys. Whether the bronze were any better than babbitt bushings or not was/is debatable. It seems to me when I got in the industry in 1980 there was some concern about the converter hubs being too soft and the bronze bushings could/would sieze on the hub. Now of course all converter builders and re-builders use a hardened hub.

You got it as far as I remember in both cases, except from what I remember the bronze bushings were harder on the converter hub (even hardened hubs).
I do remember the bronze bushings were a pain in the butt to stake due to their tendency to crack instead of bend.
On a performance trans we used a bronze bushing with red locktite on the bushing and seal both after wire wheeling the paint off the seal edges and the aftermarket seal retainer, so there was zero chance of blowing the seal out.