230 Block Question

Bighead440 said
I don't think there's really a "bad" 230 block, just a few marginally better ones. Every superior one I have seen has very BOLD casting numbers, like a mid-60s 383. View attachment 1715268202 View attachment 1715268203

Would take quite a bit of power to make any 400 fail IMO. I think any 400 block that has good cylinder walls is a keeper.