cleaning up the slant six head

Thanks, Have you done an engine block or heads? The reason I ask is I have recently read that this method may not get into water channels ( clean as well as I think it should ) ect ect.

Makes no sense to me that it wouldnt do what it supposed to do but thats what I am reading.

I have an engine block that Id like to clean up while I am at it.
I did an 8 3/4 housing. Ran a piece of rebar (cathode) through the axle tubes. Held it in suspension with a couple of PVC bushings.

Knowing the minimal cost of trying, I'd say go for it and post pics.