I've recently been given a 350, thats well, sat for a while. And i can't even remove the lifters out of it. So i've currently got it soaking in oil, praying that their isn't any rust in the lifter bores, but more than likely their is. So is there a way to hone the rust out as long as the bores aren't potted to badly. Or would it just ruin the block altogether.

I would do some close micing of the bore afterwards and compare to a new lifter. SBC are notorious for dumping oil out the lifter bores anyway, so a little more might be too much. Oversize lifters are available.

cool, glad that there is still some hope for this motor. I'm on my third 350 block so far. History 1st: crack in two cylinders and outer block 2nd: extreme overheating. Lets just pray the third doesn't go down from a little iron oxide.

I would say get it acid dipped. Acid dipping will remove all rust including that trash inside the water coolant passages. It only costs a few bucks, IF your local shop has an acid tank..

You scrub every oil passage and everything 3-4 times with good hot soapy water to make sure all the crud is gone..... even after acid dipping.

Stupid question but how am i supposed to get into the oil galleys and such? I'm going to try to remove as much as i can with naval jelley first.