hey! i knew a guy in high school that also used jb weld to seal a cracked block too!
and the intake manifold
and the water pump
and more things than you can think of!
he also used a block sander (the long sanders for bodywork) to surface the top of his block!

i wish i where making it all up, but once youve seen stuff like that and your still stupid enough to get in the car, youll be a jb weld believer!! the funniest part is the fact that the guy still did low 13s in the 1/4.

jb weld is some tuff stuff, if you do manage to get it all out youll probably be left with a ruined diff cup.