what kind of grinding stone is used to clearance the block for strokers? Basically, to cut into the iron efficiently.

All I see are aluminum stones says good for cutting steel and other metals, does that include iron?

 

You don't use a stone, you use a carbide cutter.

 

Do you know where I can get those at? I tried Home Depot and Lowes, Maybe I am looking in the wrong places.
I remember a few years back when I did my first clearancing for my other 383, It was at my buddies house and I was using some cone shaped thing on the air tool that worked extremely well. I don't remember the material, probably some king of 'carbide'.

 

You should be able to find them at any hardware store.

 

i used a cheap dollar store stone kit and an old a$$ drill, took a good while and stones didnt last but it worked. just make sure you clean up the block after.

 

carbidebur.com has the best prices. I think they shipped 'em to me pretty fast. They were so cheap on there that even after shipping and border fee's it was SIGNIFICANTLY cheaper than buying them locally ($40 per).

A 3/8" ball nose cylindrical one, on a short stick (you don't need the 6" long one) should do it. It's also handy to have for your cylinder heads (although a steel cutting one would load up with AL quickly...)

 

I like a cylindrical one better for that.

 

Look at McMaster Carr. They're a supplier of almost anything related to manufacturing. I bought my carbide burrs for $15-25 ea depending on the style and size. I think a 1/2" oval is about right for this type of grinding. And you'll also need a die grinder. Harbor Freight has pretty good ones for about $20. You can find both these suppliers online.
----------
One more tip if you're grinding on aluminum. Spray the burr and the manifold (or head or whatever) with WD-40. This will keep the aluminum from sticking to the grinding burr. Re-apply every port or so. Use a wire brush to clean the burr or a pick if it gets loaded up bad.

 

Other good sources are Rutland Tool and Travers Tool.

 

any kind of local name stores that would carry them?

 

Ace Hardware.