Engine block leak

[Tractor Rod]

I have a 1941 Farmall B and is in great condition but has a slight seepage on the opposite side of the spark plugs in the block. Any suggestions? Is it something that can be braised or a product out there that will be like stop leak in the radiator? It’s not a huge leak just a little seepage and I’m wondering if there’s a way to fix that without replacing the block?

Thanks in advance for your advice.

[Urbish]

As long as you have a non-pressure radiator cap, you would be fine to braze the crack. Even with a mild pressure cap (like 7psi), brazing might hold up.

[Eugene]

viewtopic.php?f=177&t=111487
Above link, epoxy fix.

I would go with brazing. Thermosyphon cooling system, chemicals won't work.