How much power can a 440 block handle?

You should have added that the engine was burdoned at the track with a all steel/full interior 69 Dart running the low 9's. I also give alot of credit to the 8-3/4 holding up for a long time as well.
How you drovethat everyday all day to every where you needed to be was a "HOLY COW" thing to me. Running that race fuel everyday. WHEW!