I've got a question on this matter, and a crack on the block of my own 216. Why not drill all along the crack, allowing the JB weld to really push through the crack? How about 1/2 inch between each hole?
Karl


It may not be the easy way, but it is the Cowboy Way - Ranger Doug
Beware of the stories you read or tell; subtly, at night, beneath the waters of consciousness, they are altering your world. - Ben Okri
1953 Chevy 3100
1960 Volvo PV 544
1941 Chevrolet Special Deluxe