Causes of engine block crack?

Ricks70Duster340 said
Sorry for your loss on this one, Dano. Hopefully you can have that sleeved to fix if you want to keep it. If not, maybe time to upgrade to a 408 stroker by Blueprint? Can't beat their warranty, and drop in and go. Had a bad engine in my 70 Duster so got the 408 from BPE and never looked back.
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I was looking into that. I have everything for my top end rebuild specifically for an LA small block. I know oiling for the magnum blocks are vastly different. What modifications would I have to do to make a magnum blocks compatible with an LA top end?