[midniteblues]

From what I read online you dont wanna use the acid on cast iron because it's so porous so I just wanted to be safe in that matter.

Blasting would be best.

But...
I used a knotted wire wheel on a drill too do most of them.then a series of smaller ones too get into the crevices.

I also continued to smooth them out with grinding wheels and rolocs although this part isn't for stock resto.

Then used vht paints on them...it will probably burn off anyway.

That coating above is sweet.