First of all thanks for the help on my previous question. I found diamond tiped sawsall blade to cut the cracked castiron pipe. But my confidence is still low. I looked at the pipe again to see how far the crack is. The 3" castiron pipe has a vertical crack that goes very close to the castiron hub with a Tee which would be used for a clean out. The Tee goes into another castiron pipe with hub which goes into a cemented floor.

I still have question is there a shielded clamp that can go over a 3" pipe castiron hub and attach to a 3" PVC pipe? If yes, how can I clean out the lead or should I even try?

Again Thanks!!
PS. My dad is calling a plumber.

I still have question is there a shielded clamp that can go over a 3" pipe castiron hub and attach to a 3" PVC pipe? PS. My dad is calling a plumber. No! If you cut the hub off then you can attach a 3" clamp to the bald ends. Good luck and let me know what the plumber says. Tom