Shot peening engine block question

[frankk]

Thank you sir

[Hawkeye]

Thank you for the vinegar information.

[Lynn]

Before any type of blasting, I think I would get a really heavy duty trash bag, put the block in the bag, put the bag in a big vat and soak it in evaporust. I think that is your bet bet of removing rust ONLY and leaving the surfaces looking as original as possible.

[CamarosRus]

These cast iron parts were shot blasted for less than 5 minutes and LOOK LIKE NEW
Castings.................Then you can Primer, Paint , CERAKOTE or leave Natural and
smother with COSMOLINE.............

Problem for most of you is finding a foundry, parts rebuilder, machine shop that
will do outside work at a reasonable cost.............