[ho428]

Got a good 400 block to start building, been tanked and magged but it still pretty rusty. Bores and galleys are ok but mostly anything unmachined is surface rusty.
I had one shop advise against using chemicals like evaporust on it, didn't give a reason though.
Anyone used that on a block before?
Other than a wire wheel and hours of time what other options are there?

Going with splayed caps and some oiling mods, typical bore and deck.