727 guru question...

I have a small block very short shaft 727 in my divorced transfer case power wagon..
QUESTION: If I wanted to put in a big block could I just get a big block 727 case and use my short shaft tail housing and guts?? Of course new torque converter...
Would the big block torque converter have the same pump and seal size?...
Thank you for anybody's knowledge on this... It seems possible but LOL maybe it's just wishful thinking...


@TrailBeast