Distributor stuck and broke off

WOW.... My guess is your going to have to machine cut that out somehow most likely to an over size and press in a bushing. Someone messed that UP.

Even if you could put a rod in from the oil pump side and whale on it pounding the piece of the Distributor shaft out. It would never seal properly. You could easily bust the whole side out of the block pounding on it.

Personally if I needed to save that block I would take it to a good machine shop and have them bore it out and then either weld up and machine off the face surface or machine it down smooth and make a matching spacer to be used under the distributor to hold it at the proper height.

I would try to drill the shaft and tap it for a bolt to screw in.  Then use a puller to pull on the bolt head

One could build it up and grind it down also

Sounds like best case is take it to a machine shop for an estimate and maybe i am lucky. I assume I would need to get specs and/ or a distributor for them to evaluate with.

I still don't know whether it has other issues or not, it was rebuilt .030 over at some point, and cylinders look good, but not sure how it got into the condition it is.

If I look for a new block, any suggestions on where? I am in Nebraska.

Its fixable, being at the bottom of the planet we have no choice here.

I drilled mine carefully until I got close to the original bore. Then hand hacksawed it in three spots and it broke into pieces and came out. There is a shelf at the bottom with a smaller hole for the distributor shaft to pass through. The ring and washer will stay there below the stub of the distributor. Don't try and drill all the way or you'll hit the shelf. My bit simply turned on top of the washer below. You can't beat it out from below. Not sure how far they ground the block. You could measure another one and make a flat spacer to get the right height.   It's worth doing if the rest of the engine is OK.  Patience is the key. Slow and easy. Take your time. I drilled with progressive sized bits until close but not into the original bore. By then a hack saw blade in your hand , would fit to the bottom of the distributor stub. That said, I like the idea of drilling and tapping the distributor stub and trying a slide hammer. All the material is cast iron. It's soft. Don't get too rough or you'll be done.  It can be done, I'm living proof. LOL, John

Update: the block lives on another day! This is how we got the embedded distributor piece out ( not sure it was the best method, but worked)

Yesterday we used a piece of 5/8" steel to work up through the oil pump shaft. We fluted the end and twisted it into the block in order to chew through the rust inch by inch. Once we reached the collar and thrust washer, we tapped the steel hoping to push the whole piece out. This did not work! We broke the collar and washer, and drove the bushing out. Once these pieces were out, we soaked with liquid wrench.

Today we returned with a saws all. We modified a short blade with a grinder to fit within the approximately 5/8" opening,. We then carefully saw cut the broken distributor metal. Once through, we tapped the piece into the block to check if it would move, and it did! We then hooked one end of a puller onto the back of the piece through the distributor hole, and drove the 5/8" steel back in through the oil pump hole to drive the piece out. We think some cleanup with Emory cloth may be all we need in the block opening, but will know more once i get a distributor. Now on to extracting at least 6 twisted off studs the PO left me in the block!

Good show! I am glad that you were able to save this block.