Question about CRT 904-4 trans

I have a CRT-904-4 trans that I will be installing back into my Dart in about a week or two. My engine had to be fully rebuilt due to crank wear at the thrust bearing. The question I have is this... Is there any way that the transmission could have caused the crank to fail? (excluding converter balloon, and improper installation) I'm no expert, and just spent a small fortune on a 416 stroker build. I'd appreciate any useful info. Also the trans is only about a year old, but I have no knowledge of how the previous owner treated the vehicle. It seemed to shift normally however 1st gear felt a little like it was slipping. Unless the 3800 converter had something to do with that. To conclude I just want peace of mind re-installing that unit behind a fresh engine.

I would check the end play of the transmission input shaft. I suppose it's possible that a transmission with too much shaft play could put excessive wear on the crank when shifting.

i would think only on a 4 speed it could wear the thrust badly,unless improper lnstall or wrong parts....

bad440 said:

i would think only on a 4 speed it could wear the thrust badly,unless improper lnstall or wrong parts....

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Exactly, and you never know with an aftermarket trans. Who knows who put it together, or put it in? It's possible that if there's enough play in the shaft it could push the converter into the flexplate, of course, now that I think about that, there would probably be some evidence of converter-flexplate/crankshaft impact. You may want to check that to see if you can rule out this whole theory.

It's been a long day.

Thanks. I will check for that. Is there something that will be noticeable to me by impacts from excessive endplay at the flex plate? It has a heavy duty one on it.