I purchased a used shortblock over a year ago from a distinguished memeber here on SF which has HC pistons, rods, but most importantly billet mains. Finally I've come to the point in my build where I'm ready to assemble the engine and dump it in and upon removing the old head gasket material I found some unwelcome surprises. Between a few of the head stud holes and coolant passages are tiny cracks. Has anyone else seen something like this? Is it cause for concern? Can it be fixed or is the block trash? My thinking tells me that coolant could push through to the head stud area and up into the cylinder head but probably stopping at the washer under the head stud nut. Then of course there is the question will it enlarge when I torque the head down, will it enlarge when 1200hp is pushing up on it. This area of the block seems very weak and thin but also not heavily structural so I feel like this may be a common thing among high hp engines.