Hi Since my engine in my blazer is slowly but surely coming to the end of my life, I have to assemble a new engine well or badly. Since I am dependent on the blazer ( Daily) I had to go looking for another engine, of course I also found one at a mock price ( 4 Bolt). The engine stood around the last 15 years and was not driven anymore, after this time it is clear that on the block rust accumulates and other dirt. With which procedure war ic h the rust and dirt most easily down without messing up something? I don’t like working with the flex and braid brush, that will be too little clean for me. In various US forums you talk about sandblasting but can’t imagine that this is good for the block, because of the whole channels and so on or am I wrong? The block is completely processed after doing the cleaning, so say drilling, honing, milling etc. Which method can you recommend to me? Which is best around the rust to Remove? Thank you for your help