[car4jim]

What is the current best practice for getting a block cleaned and prepped for rebuild?? It's been a couple of decades since I rebuilt an engine. Back in the day there was"hot-tanking" which I think has gone to the roadside due to EPA issues. I need to get my 1968 302 cast iron block cleaned. These blocks are rumored to shed rust and other contamination from the blocks cooling passages that can block the radiator. What is the current best practice for getting a block cleaned and prepped for rebuild. I live in So Cal if that makes a difference. Can anyone please point me in the right direction?