To have oil gush out after such a short time, my thought is pressure build up in the oil pan. Has a critter plugged the oil pan vent? Might be worth a little investigation before pulling the oil pan.
How sweet the roar of a Chevy four
Participant on Chatter since 11/22/2001
19758 posts on the former Chatter site
There is another possible source for the oil I'd check before tearing too many things apart again.
I believe there is a plug in the rear end of the main oil gallery that is NOT a threaded plug.
If it's leaking, oil will be hitting the front side of the flywheel which will fling it everywhere.
Ole S Olson
Saskatoon, Sask, Canada
1946 DR 3/4 ton stake
1139 old site posts