hi

i have a friend that has a 440 block with a crack just like those !

it is actuau a 493 cu stroker .

we sealed it with a external epoxy .

if you pm me i will get the brand .

we cleaned the block paint off with a die grinder with wire brush , then hand scoured it with 60 grit sand paper .

put pressed epoxy on firmly and let it cure .

no more leaks ! 2 years + .

his crack extended to the freeze plug hole .

he races the car 6 - 8 times a year . <street car>