You know how we all learn from our mistakes! This happened to me about 20 years ago when I had just started driving the Barracuda. It has a 340 and it was leaking slowly from somewhere around the same place; couldn't tell exactly from where. So like RRR said, I took it all apart to fix it right. When it was all back together, I poured the antifreeze in nd it just gushed out from the bottom of the water pump. After taking it all apart again, I saw that somehow the WP gasket got a fold, or crimp in it and left a nice little hole. That was when I learned to double check all gasket alignments one last time before mating pieces. I can laugh about it now, but it wasn't too funny then.