Well the flathead block is cracked. :(

Depending on the location of the cracks they or you maybe able to weld them up.

ramblinfsj wrote: Depending on the location of the cracks they or you maybe able to weld them up.

A lot of us antique iron collectors have done this successfully a number of times. Just try for a new 1926 block....... or even a good used one.
I had an exhaust manifold literally patched for a tractor I used to own. The back side was blown out, burned and rusted through. A neighbor welding fixed it up nicely. Even under loads that got the exhaust orange-hot she held up.

There are tricks - of course, it depends on WHERE the cracks are and where they lead to!
First choice-  different block if possible........

The trick is using a wire welder. No expensive nickel rods. If you can grind a little valley in the crack and then make sure it's extremely clean, a wire welder with seal the crack. We had the case of an old windwill welded up and it's as good as new.

At this point there are way too many to weld up. Not unless it was some super rare motor, it just isn't worth it. I have this other one that runs like a champ, but it smokes. So now I will pull the head off tomorrow and see why it smokes! Hopefully it isn't because it is cracked. :(

Contact raysinvegas and pacerman. They both have a bunch of old Rambler parts and just might have a good flathead block if you find you need one. Raysinvegas is, of course, in Las Vegas and I think Pacerman is in Salinas, CA.